diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e65a66f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,5 @@
+/latex
+/build
+/pdf
+.obsidian
+.trash
diff --git a/converters/bookletify.latex b/converters/bookletify.latex
new file mode 100644
index 0000000..06df170
--- /dev/null
+++ b/converters/bookletify.latex
@@ -0,0 +1,9 @@
+\documentclass[a4paper]{article}
+
+\usepackage{pdfpages}
+
+\begin{document}
+
+\includepdf[pages=-, nup=2x1, frame, signature*=4, landscape, angle=180]{?pdf?}
+
+\end{document}
diff --git a/converters/diagrams.lua b/converters/diagrams.lua
new file mode 100644
index 0000000..a74b82e
--- /dev/null
+++ b/converters/diagrams.lua
@@ -0,0 +1,644 @@
+--[[
+diagram – create images and figures from code blocks.
+
+MIT License
+
+Copyright © 2019-2023 Albert Krewinkel
+Copyright © 2019 Thorsten Sommer
+Copyright © 2018 Florian Schätzig
+Copyright © 2018 John MacFarlane
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+]]
+-- The filter uses the Figure AST element, which was added in pandoc 3.
+PANDOC_VERSION:must_be_at_least '3.0'
+
+local version = pandoc.types.Version '1.2.0'
+
+-- Report Lua warnings to stderr if the `warn` function is not plugged into
+-- pandoc's logging system.
+if not warn then
+  -- fallback
+  warn = function(...) io.stderr:write(table.concat({ ... })) end
+elseif PANDOC_VERSION < '3.1.4' then
+  -- starting with pandoc 3.1.4, warnings are reported to pandoc's logging
+  -- system, so no need to print warnings to stderr.
+  warn '@on'
+end
+
+local io = require 'io'
+local pandoc = require 'pandoc'
+local system = require 'pandoc.system'
+local utils  = require 'pandoc.utils'
+local List   = require 'pandoc.List'
+local stringify = utils.stringify
+local with_temporary_directory = system.with_temporary_directory
+local with_working_directory = system.with_working_directory
+
+--- Returns a filter-specific directory in which cache files can be
+--- stored, or nil if no such directory is available.
+local function cachedir ()
+  local cache_home = os.getenv 'XDG_CACHE_HOME'
+  if not cache_home or cache_home == '' then
+    local user_home = system.os == 'windows'
+      and os.getenv 'USERPROFILE'
+      or os.getenv 'HOME'
+
+    if not user_home or user_home == '' then
+      return nil
+    end
+    cache_home = pandoc.path.join{user_home, '.cache'} or nil
+  end
+
+  -- Create filter cache directory
+  return pandoc.path.join{cache_home, 'pandoc-diagram-filter'}
+end
+
+--- Path holding the image cache, or `nil` if the cache is not used.
+local image_cache = nil
+
+local mimetype_for_extension = {
+  jpeg = 'image/jpeg',
+  jpg = 'image/jpeg',
+  pdf = 'application/pdf',
+  png = 'image/png',
+  svg = 'image/svg+xml',
+}
+
+local extension_for_mimetype = {
+  ['application/pdf'] = 'pdf',
+  ['image/jpeg'] = 'jpg',
+  ['image/png'] = 'png',
+  ['image/svg+xml'] = 'svg',
+}
+
+--- Converts a list of format specifiers to a set of MIME types.
+local function mime_types_set (tbl)
+  local set = {}
+  local mime_type
+  for _, image_format_spec in ipairs(tbl) do
+    mime_type = mimetype_for_extension[image_format_spec] or image_format_spec
+    set[mime_type] = true
+  end
+  return set
+end
+
+--- Reads the contents of a file.
+local function read_file (filepath)
+  local fh = io.open(filepath, 'rb')
+  local contents = fh:read('a')
+  fh:close()
+  return contents
+end
+
+--- Writes the contents into a file at the given path.
+local function write_file (filepath, content)
+  local fh = io.open(filepath, 'wb')
+  fh:write(content)
+  fh:close()
+end
+
+--- Like `pandoc.pipe`, but allows "multi word" paths:
+-- Supplying a list as the first argument will use the first element as
+-- the executable path and prepend the remaining elements to the list of
+-- arguments.
+local function pipe (command, args, input)
+  local cmd
+  if pandoc.utils.type(command) == 'List' then
+    command = command:map(stringify)
+    cmd = command:remove(1)
+    args = command .. args
+  else
+    cmd = stringify(command)
+  end
+  return pandoc.pipe(cmd, args, input)
+end
+
+
+--
+-- Diagram Engines
+--
+
+-- PlantUML engine; assumes that there's a `plantuml` binary.
+local plantuml = {
+  line_comment_start =  [[']],
+  mime_types = mime_types_set{'pdf', 'png', 'svg'},
+  compile = function (self, puml)
+    local mime_type = self.mime_type or 'image/svg+xml'
+    -- PlantUML format identifiers correspond to common file extensions.
+    local format = extension_for_mimetype[mime_type]
+    if not format then
+      format, mime_type = 'svg', 'image/svg+xml'
+    end
+    local args = {'-t' .. format, "-pipe", "-charset", "UTF8"}
+    return pipe(self.execpath or 'plantuml', args, puml), mime_type
+  end,
+}
+
+--- GraphViz engine for the dot language
+local graphviz = {
+  line_comment_start = '//',
+  mime_types = mime_types_set{'jpg', 'pdf', 'png', 'svg'},
+  mime_type = 'image/svg+xml',
+  compile = function (self, code)
+    local mime_type = self.mime_type
+    -- GraphViz format identifiers correspond to common file extensions.
+    local format = extension_for_mimetype[mime_type]
+    if not format then
+      format, mime_type = 'svg', 'image/svg+xml'
+    end
+    return pipe(self.execpath or 'dot', {"-T"..format}, code), mime_type
+  end,
+}
+
+--- Mermaid engine
+local mermaid = {
+  line_comment_start = '%%',
+  mime_types = mime_types_set{'pdf', 'png', 'svg'},
+  compile = function (self, code)
+    local mime_type = self.mime_type or 'image/svg+xml'
+    local file_extension = extension_for_mimetype[mime_type]
+    return with_temporary_directory("diagram", function (tmpdir)
+      return with_working_directory(tmpdir, function ()
+        local infile = 'diagram.mmd'
+        local outfile = 'diagram.' .. file_extension
+        write_file(infile, code)
+        pipe(
+          self.execpath or 'mmdc',
+          {"--pdfFit", "--input", infile, "--output", outfile},
+          ''
+        )
+        return read_file(outfile), mime_type
+      end)
+    end)
+  end,
+}
+
+--- TikZ
+--
+
+--- LaTeX template used to compile TikZ images.
+local tikz_template = pandoc.template.compile [[
+\documentclass{standalone}
+\usepackage{tikz}
+$for(header-includes)$
+$it$
+$endfor$
+$additional-packages$
+\begin{document}
+$body$
+\end{document}
+]]
+
+--- The TikZ engine uses pdflatex to compile TikZ code to an image
+local tikz = {
+  line_comment_start = '%%',
+
+  mime_types = {
+    ['application/pdf'] = true,
+  },
+
+  --- Compile LaTeX with TikZ code to an image
+  compile = function (self, src, user_opts)
+    return with_temporary_directory("tikz", function (tmpdir)
+      return with_working_directory(tmpdir, function ()
+        -- Define file names:
+        local file_template = "%s/tikz-image.%s"
+        local tikz_file = file_template:format(tmpdir, "tex")
+        local pdf_file = file_template:format(tmpdir, "pdf")
+
+        -- Treat string values as raw LaTeX
+        local meta = {
+          ['header-includes'] = user_opts['header-includes'],
+          ['additional-packages'] = {pandoc.RawInline(
+            'latex',
+            stringify(user_opts['additional-packages'] or '')
+          )},
+        }
+        local tex_code = pandoc.write(
+          pandoc.Pandoc({pandoc.RawBlock('latex', src)}, meta),
+          'latex',
+          {template = tikz_template}
+        )
+        write_file(tikz_file, tex_code)
+
+        -- Execute the LaTeX compiler:
+        local success, result = pcall(
+          pipe,
+          self.execpath or 'pdflatex',
+          { '-interaction=nonstopmode', '-output-directory', tmpdir, tikz_file },
+          ''
+        )
+        if not success then
+          warn(string.format(
+                 "The call\n%s\nfailed with error code %s. Output:\n%s",
+                 result.command,
+                 result.error_code,
+                 result.output
+          ))
+        end
+        return read_file(pdf_file), 'application/pdf'
+      end)
+    end)
+  end
+}
+
+--- Asymptote diagram engine
+local asymptote = {
+  line_comment_start = '%%',
+  mime_types = {
+    ['application/pdf'] = true,
+  },
+  compile = function (self, code)
+    return with_temporary_directory("asymptote", function(tmpdir)
+      return with_working_directory(tmpdir, function ()
+        local pdf_file = "pandoc_diagram.pdf"
+        local args = {'-tex', 'pdflatex', "-o", "pandoc_diagram", '-'}
+        pipe(self.execpath or 'asy', args, code)
+        return read_file(pdf_file), 'application/pdf'
+      end)
+    end)
+  end,
+}
+
+--- Cetz diagram engine
+local cetz = {
+  line_comment_start = '%%',
+  mime_types = mime_types_set{'jpg', 'pdf', 'png', 'svg'},
+  mime_type = 'image/svg+xml',
+  compile = function (self, code)
+    local mime_type = self.mime_type
+    local format = extension_for_mimetype[mime_type]
+    if not format then
+      format, mime_type = 'svg', 'image/svg+xml'
+    end
+    local preamble = [[
+#import "@preview/cetz:0.3.4"
+#set page(width: auto, height: auto, margin: .5cm)
+]]
+
+    local typst_code = preamble .. code
+
+    return with_temporary_directory("diagram", function (tmpdir)
+      return with_working_directory(tmpdir, function ()
+        local outfile = 'diagram.' .. format
+        local execpath = self.execpath
+        if not execpath and quarto and quarto.version >= '1.4' then
+          -- fall back to the Typst exec shipped with Quarto.
+          execpath = List{'quarto', 'typst'}
+        end
+        pipe(
+          execpath or 'typst',
+          {"compile", "-f", format, "-", outfile},
+          typst_code
+        )
+        return read_file(outfile), mime_type
+      end)
+    end)
+  end,
+}
+
+local default_engines = {
+  asymptote = asymptote,
+  dot       = graphviz,
+  mermaid   = mermaid,
+  plantuml  = plantuml,
+  tikz      = tikz,
+  cetz      = cetz,
+}
+
+--
+-- Configuration
+--
+
+--- Options for the output format of the given name.
+local function format_options (name)
+  local pdf2svg = name ~= 'latex' and name ~= 'context'
+  local is_office_format = name == 'docx' or name == 'odt'
+  -- Office formats seem to work better with PNG than with SVG.
+  local preferred_mime_types = is_office_format
+    and pandoc.List{'image/png', 'application/pdf'}
+    or  pandoc.List{'application/pdf', 'image/png'}
+  -- Prefer SVG for non-PDF output formats, except for Office formats
+  if is_office_format then
+    preferred_mime_types:insert('image/svg+xml')
+  elseif pdf2svg then
+    preferred_mime_types:insert(1, 'image/svg+xml')
+  end
+  return {
+    name = name,
+    pdf2svg = pdf2svg,
+    preferred_mime_types = preferred_mime_types,
+    best_mime_type = function (self, supported_mime_types, requested)
+      return self.preferred_mime_types:find_if(function (preferred)
+          return supported_mime_types[preferred] and
+            (not requested or
+             (pandoc.utils.type(requested) == 'List' and
+              requested:includes(preferred)) or
+             (pandoc.utils.type(requested) == 'table' and
+              requested[preferred]) or
+
+             -- Assume string, Inlines, and Blocks values specify the only
+             -- acceptable MIME type.
+             stringify(requested) == preferred)
+      end)
+    end
+  }
+end
+
+--- Returns a configured diagram engine.
+local function get_engine (name, engopts, format)
+  local engine = default_engines[name] or
+    select(2, pcall(require, stringify(engopts.package)))
+
+  -- Sanity check
+  if not engine then
+    warn(PANDOC_SCRIPT_FILE, ": No such engine '", name, "'.")
+    return nil
+  elseif engopts == false then
+    -- engine is disabled
+    return nil
+  elseif engopts == true then
+    -- use default options
+    return engine
+  end
+
+  local execpath = engopts.execpath or os.getenv(name:upper() .. '_BIN')
+
+  local mime_type = format:best_mime_type(
+    engine.mime_types,
+    engopts['mime-type'] or engopts['mime-types']
+  )
+  if not mime_type then
+    warn(PANDOC_SCRIPT_FILE, ": Cannot use ", name, " with ", format.name)
+    return nil
+  end
+
+  return {
+    execpath = execpath,
+    compile = engine.compile,
+    line_comment_start = engine.line_comment_start,
+    mime_type = mime_type,
+    opt = engopts or {},
+  }
+end
+
+--- Returns the diagram engine configs.
+local function configure (meta, format_name)
+  local conf = meta.diagram or {}
+  local format = format_options(format_name)
+  meta.diagram = nil
+
+  -- cache for image files
+  if conf.cache then
+    image_cache = conf['cache-dir']
+      and stringify(conf['cache-dir'])
+      or cachedir()
+    pandoc.system.make_directory(image_cache, true)
+  end
+
+  -- engine configs
+  local engine = {}
+  for name, engopts in pairs(conf.engine or default_engines) do
+    engine[name] = get_engine(name, engopts, format)
+  end
+
+  return {
+    engine = engine,
+    format = format,
+    cache = image_cache and true,
+    image_cache = image_cache,
+  }
+end
+
+--
+-- Format conversion
+--
+
+--- Converts a PDF to SVG.
+local pdf2svg = function (imgdata)
+  -- Using `os.tmpname()` instead of a hash would be slightly cleaner, but the
+  -- function causes problems on Windows (and wasm). See, e.g.,
+  -- https://github.com/pandoc-ext/diagram/issues/49
+  local pdf_file = 'diagram-' .. pandoc.utils.sha1(imgdata) .. '.pdf'
+  write_file(pdf_file, imgdata)
+  local args = {
+    '--export-type=svg',
+    '--export-plain-svg',
+    '--export-filename=-',
+    pdf_file
+  }
+  return pandoc.pipe('inkscape', args, ''), os.remove(pdf_file)
+end
+
+local function properties_from_code (code, comment_start)
+  local props = {}
+  local pattern = comment_start:gsub('%p', '%%%1') .. '| ' ..
+    '([-_%w]+): ([^\n]*)\n'
+  for key, value in code:gmatch(pattern) do
+    if key == 'fig-cap' then
+      props['caption'] = value
+    else
+      props[key] = value
+    end
+  end
+  return props
+end
+
+local function diagram_options (cb, comment_start)
+  local attribs = comment_start
+    and properties_from_code(cb.text, comment_start)
+    or {}
+  for key, value in pairs(cb.attributes) do
+    attribs[key] = value
+  end
+
+  local alt
+  local caption
+  local fig_attr = {id = cb.identifier}
+  local filename
+  local image_attr = {}
+  local user_opt = {}
+
+  for attr_name, value in pairs(attribs) do
+    if attr_name == 'alt' then
+      alt = value
+    elseif attr_name == 'caption' then
+      -- Read caption attribute as Markdown
+      caption = attribs.caption
+        and pandoc.read(attribs.caption).blocks
+        or nil
+    elseif attr_name == 'filename' then
+      filename = value
+    elseif attr_name == 'label' then
+      fig_attr.id = value
+    elseif attr_name == 'name' then
+      fig_attr.name = value
+    else
+      -- Check for prefixed attributes
+      local prefix, key = attr_name:match '^(%a+)%-(%a[-%w]*)$'
+      if prefix == 'fig' then
+        fig_attr[key] = value
+      elseif prefix == 'image' or prefix == 'img' then
+        image_attr[key] = value
+      elseif prefix == 'opt' then
+        user_opt[key] = value
+      else
+        -- Use as image attribute
+        image_attr[attr_name] = value
+      end
+    end
+  end
+
+  return {
+    ['alt'] = alt or
+      (caption and pandoc.utils.blocks_to_inlines(caption)) or
+      {},
+    ['caption'] = caption,
+    ['fig-attr'] = fig_attr,
+    ['filename'] = filename,
+    ['image-attr'] = image_attr,
+    ['opt'] = user_opt,
+  }
+end
+
+local function get_cached_image (hash, mime_type)
+  if not image_cache then
+    return nil
+  end
+  local filename = hash .. '.' .. extension_for_mimetype[mime_type]
+  local imgpath = pandoc.path.join{image_cache, filename}
+  local success, imgdata = pcall(read_file, imgpath)
+  if success then
+    return imgdata, mime_type
+  end
+  return nil
+end
+
+local function cache_image (codeblock, imgdata, mimetype)
+  -- do nothing if caching is disabled or not possible.
+  if not image_cache then
+    return
+  end
+  local ext = extension_for_mimetype[mimetype]
+  local filename = pandoc.sha1(codeblock.text) .. '.' .. ext
+  local imgpath = pandoc.path.join{image_cache, filename}
+  write_file(imgpath, imgdata)
+end
+
+-- Executes each document's code block to find matching code blocks:
+local function code_to_figure (conf)
+  return function (block)
+    -- Check if a converter exists for this block. If not, return the block
+    -- unchanged.
+    local diagram_type = block.classes[1]
+    if not diagram_type then
+      return nil
+    end
+
+    local engine = conf.engine[diagram_type]
+    if not engine then
+      return nil
+    end
+
+    -- Unified properties.
+    local dgr_opt = diagram_options(block, engine.line_comment_start)
+    for optname, value in pairs(engine.opt or {}) do
+      dgr_opt.opt[optname] = dgr_opt.opt[optname] or value
+    end
+
+    local run_pdf2svg = engine.mime_type == 'application/pdf'
+      and conf.format.pdf2svg
+
+    -- Try to retrieve the image data from the cache.
+    local imgdata, imgtype
+    if conf.cache then
+      imgdata, imgtype = get_cached_image(
+        pandoc.sha1(block.text),
+        run_pdf2svg and 'image/svg+xml' or engine.mime_type
+      )
+    end
+
+    if not imgdata or not imgtype then
+      -- No cached image; call the converter
+      local success
+      success, imgdata, imgtype =
+        pcall(engine.compile, engine, block.text, dgr_opt.opt)
+
+      -- Bail if an error occurred; imgdata contains the error message
+      -- when that happens.
+      if not success then
+        warn(PANDOC_SCRIPT_FILE, ': ', tostring(imgdata))
+        return nil
+      elseif not imgdata then
+        warn(PANDOC_SCRIPT_FILE, ': Diagram engine returned no image data.')
+        return nil
+      elseif not imgtype then
+        warn(PANDOC_SCRIPT_FILE, ': Diagram engine did not return a MIME type.')
+        return nil
+      end
+
+      -- Convert SVG if necessary.
+      if imgtype == 'application/pdf' and conf.format.pdf2svg then
+        imgdata, imgtype = pdf2svg(imgdata), 'image/svg+xml'
+      end
+
+      -- If we got here, then the transformation went ok and `img` contains
+      -- the image data.
+      cache_image(block, imgdata, imgtype)
+    end
+
+    -- Use the block's filename attribute or create a new name by hashing the
+    -- image content.
+    local basename, _extension = pandoc.path.split_extension(
+      dgr_opt.filename or pandoc.sha1(imgdata)
+    )
+    local fname = basename .. '.' .. extension_for_mimetype[imgtype]
+
+    -- Store the data in the media bag:
+    pandoc.mediabag.insert(fname, imgtype, imgdata)
+
+    -- Create the image object.
+    local image = pandoc.Image(dgr_opt.alt, fname, "", dgr_opt['image-attr'])
+
+    -- Create a figure if the diagram has a caption; otherwise return
+    -- just the image.
+    return dgr_opt.caption and
+      pandoc.Figure(
+        pandoc.Plain{image},
+        dgr_opt.caption,
+        dgr_opt['fig-attr']
+      ) or
+      pandoc.Plain{image}
+  end
+end
+
+return setmetatable(
+  {{
+    Pandoc = function (doc)
+      local conf = configure(doc.meta, FORMAT)
+      return doc:walk {
+        CodeBlock = code_to_figure(conf),
+      }
+    end
+  }},
+  {
+    version = version,
+  }
+)
diff --git a/converters/include-files.lua b/converters/include-files.lua
new file mode 100644
index 0000000..e2264d7
--- /dev/null
+++ b/converters/include-files.lua
@@ -0,0 +1,127 @@
+--- include-files.lua – filter to include Markdown files
+---
+--- Copyright: © 2019–2021 Albert Krewinkel
+--- License:   MIT – see LICENSE file for details
+
+-- Module pandoc.path is required and was added in version 2.12
+PANDOC_VERSION:must_be_at_least '2.12'
+
+local List = require 'pandoc.List'
+local path = require 'pandoc.path'
+local system = require 'pandoc.system'
+
+--- Get include auto mode
+local include_auto = false
+function get_vars (meta)
+  if meta['include-auto'] then
+    include_auto = true
+  end
+end
+
+--- Keep last heading level found
+local last_heading_level = 0
+function update_last_level(header)
+  last_heading_level = header.level
+end
+
+--- Update contents of included file
+local function update_contents(blocks, shift_by, include_path)
+  local update_contents_filter = {
+    -- Shift headings in block list by given number
+    Header = function (header)
+      if shift_by then
+        header.level = header.level + shift_by
+      end
+      return header
+    end,
+    -- If link paths are relative then prepend include file path
+    Link = function (link)
+        if path.is_relative(link.target) and string.sub(path.filename(link.target), 1, 1) ~= '#' then
+            link.target = path.normalize(path.join({include_path, link.target}))
+        end
+        return link
+    end,
+    -- If image paths are relative then prepend include file path
+    Image = function (image)
+      if path.is_relative(image.src) then
+        image.src = path.normalize(path.join({include_path, image.src}))
+      end
+      return image
+    end,
+    -- Update path for include-code-files.lua filter style CodeBlocks
+    CodeBlock = function (cb)
+      if cb.attributes.include and path.is_relative(cb.attributes.include) then
+        cb.attributes.include =
+          path.normalize(path.join({include_path, cb.attributes.include}))
+        end
+      return cb
+    end
+  }
+
+  return pandoc.walk_block(pandoc.Div(blocks), update_contents_filter).content
+end
+
+--- Filter function for code blocks
+local transclude
+function transclude (cb)
+  -- ignore code blocks which are not of class "include".
+  if not cb.classes:includes 'include' then
+    return
+  end
+
+  -- Markdown is used if this is nil.
+  local format = cb.attributes['format']
+
+  -- Attributes shift headings
+  local shift_heading_level_by = 0
+  local shift_input = cb.attributes['shift-heading-level-by']
+  if shift_input then
+    shift_heading_level_by = tonumber(shift_input)
+  else
+    if include_auto then
+      -- Auto shift headings
+      shift_heading_level_by = last_heading_level
+    end
+  end
+
+  --- keep track of level before recusion
+  local buffer_last_heading_level = last_heading_level
+
+  local blocks = List:new()
+  for line in cb.text:gmatch('[^\n]+') do
+    if line:sub(1,2) ~= '//' then
+      local fh = io.open(line)
+      if not fh then
+        io.stderr:write("Cannot open file " .. line .. " | Skipping includes\n")
+      else
+        -- read file as the given format with global reader options
+        local contents = pandoc.read(
+          fh:read '*a',
+          format,
+          PANDOC_READER_OPTIONS
+        ).blocks
+        last_heading_level = 0
+        -- recursive transclusion
+        contents = system.with_working_directory(
+            path.directory(line),
+            function ()
+              return pandoc.walk_block(
+                pandoc.Div(contents),
+                { Header = update_last_level, CodeBlock = transclude }
+              )
+            end).content
+        --- reset to level before recursion
+        last_heading_level = buffer_last_heading_level
+        blocks:extend(update_contents(contents, shift_heading_level_by,
+                                      path.directory(line)))
+        fh:close()
+      end
+    end
+  end
+  return blocks
+end
+
+return {
+  { Meta = get_vars },
+  { Header = update_last_level, CodeBlock = transclude }
+}
diff --git a/converters/mdToLatex.sh b/converters/mdToLatex.sh
new file mode 100644
index 0000000..60b3480
--- /dev/null
+++ b/converters/mdToLatex.sh
@@ -0,0 +1,85 @@
+MD_FILE="$1"
+
+BASE_DIR="$(pwd)"
+TEX_FILE="${BASE_DIR}/latex/$(basename "$MD_FILE" | sed -e 's/\.md$/.latex/')"
+BUILD_DIR="${BASE_DIR}/build/$(basename "$MD_FILE" | sed -e 's/\.md$//')"
+TEMP_MD_FILE="$BUILD_DIR/$(basename "$MD_FILE")"
+TEMP_TEX_FILE="$BUILD_DIR/$(basename "$MD_FILE" | sed -e 's|md$|latex|')"
+mkdir -p "$(dirname "$TEMP_MD_FILE")"
+
+cp "$MD_FILE" "$TEMP_MD_FILE"
+
+function download_images() {
+    echo "download images for $1"
+    for line in $(grep '!\[.*\](https://.*\.png)' "$1" | sed -e 's/ /%20;/g')
+    do
+        src=$(echo "$line" | sed -e 's/^.*(//' -e 's/).*$//' -e 's/%20;/ /g')
+        echo "remote image found: $src"
+
+        mkdir -p "${BASE_DIR}/latex/images"
+        name=$(echo "$src" | sed -e 's|^.*/\([^/]*\)$|\1|')
+        curl "$src" > "${BASE_DIR}/latex/images/$name"
+    done
+    echo "download done"
+}
+
+for line in $(grep '^!\[.*\](.*\.md)$' "$TEMP_MD_FILE" | sed -e 's/ /%20;/g')
+do
+    md_src=$(echo "$line" | sed -e 's/^.*(//' -e 's/).*$//' -e 's/%20;/ /g')
+    echo "include found: $md_src"
+
+    download_images "$(pwd)$md_src"
+
+    cp "$(pwd)$md_src" "$BUILD_DIR/$(basename "$md_src")"
+    sed -i "$BUILD_DIR/$(basename "$md_src")" \
+        -e 's|\[toc\]||' \
+        -e 's|^\[parent\].*$||' \
+        -e 's|^# |\\newpage\n# |' \
+        -e 's|^## |\\newpage\n## |' \
+        -e 's|\[\([^]]*\)\](#\([^)]*\))|[\1](#\L\2)|' \
+        -e "s|https://live.kladjes.nl/uploads|${BASE_DIR}/latex/images|" \
+        -e "s|\`\`\`mermaid|\`\`\`{.mermaid loc=${BASE_DIR}/latex/images/$(basename "$md_src")}|"
+
+    sed -i "$TEMP_MD_FILE" \
+        -e "s|^\!\[.*\]($md_src)\$|\`\`\`\\{.include\\}\n$(basename "$md_src")\n\`\`\`|"
+
+done
+
+download_images "$TEMP_MD_FILE"
+
+title="$(grep '^# ' "$MD_FILE" | head -n 1 | sed 's|^# ||')"
+
+sed -i "$TEMP_MD_FILE" \
+    -e 's|\[toc\]|\\tableofcontents|' \
+    -e 's|^\[parent\].*$||' \
+    -e 's|^# .*$||' \
+    -e 's|^#||' \
+    -e 's|^# |\\newpage\n# |' \
+    -e 's|\[\([^]]*\)\](#\([^)]*\))|[\1](#\L\2)|' \
+    -e "s|https://live.kladjes.nl/uploads|${BASE_DIR}/latex/images|" \
+    -e "s|\`\`\`mermaid|\`\`\`{.mermaid loc=${BASE_DIR}/latex/images/$(basename "$MD_FILE")}|"
+
+    # -e 's|```\([^ \t]\)=|```\1 {linenumbers}|'
+
+mkdir -p ${BASE_DIR}/latex/images/$(basename "$MD_FILE")
+cd "$BUILD_DIR"
+pandoc --lua-filter=../../converters/include-files.lua \
+    --to=latex \
+    --from=markdown+abbreviations \
+    --template "${BASE_DIR}/converters/template.latex" \
+    -o "$TEX_FILE" \
+    --dpi 300 \
+    "$(basename "$TEMP_MD_FILE")"
+cd "$BASE_DIR"
+
+# for line in $(grep '^!\[.*\](.*\.md)$' "$TEMP_MD_FILE" | sed 's/ /%20;/g')
+# do
+#     src=$(echo "$line" | sed -e 's/^.*(//' -e 's/).*$//' -e 's/%20;/ /g')
+
+#     sed -i "$TEMP_MD_FILE" \
+#         -e "s/^!\[.*\]($src)\$/\\include{$src}/"
+# done
+
+sed --in-place \
+    -e "s|?title?|$title|" \
+    "$TEX_FILE"
diff --git a/converters/template.latex b/converters/template.latex
new file mode 100644
index 0000000..eb554bb
--- /dev/null
+++ b/converters/template.latex
@@ -0,0 +1,142 @@
+\documentclass[11pt]{article}
+\usepackage[a4paper, portrait, includehead, includefoot, margin=1.5cm]{geometry}
+
+\usepackage[english]{babel}
+
+\usepackage{pdfpages}
+
+\usepackage{xcolor}
+\usepackage{makecell}
+\usepackage{tabularx}
+\usepackage{adjustbox}
+
+\usepackage{framed}
+
+\usepackage{longtable}
+\providecommand{\tightlist}{\setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
+\usepackage{booktabs}
+
+\usepackage{fontspec}
+\usepackage{xunicode}
+\usepackage{xltxtra}
+
+\newfontfamily\fontRoboto[]{Roboto}
+\newfontfamily\fontUbuntu[]{Ubuntu}
+\setmainfont{Roboto}
+
+% \usepackage[style=ieee]{biblatex}
+% \usepackage{csquotes}
+% \addbibresource{bibliography.bib}
+
+% header and footer
+\usepackage{fancyhdr}
+\renewcommand{\headrule}{}
+
+\usepackage[nodayofweek]{datetime}
+
+\definecolor{darkishyellow}{rgb}{177, 179, 173}
+
+% for images
+\usepackage{graphbox}
+\usepackage{sectsty}
+\sectionfont{\clearpage}
+
+\setkeys{Gin}{width=.99\linewidth}
+
+% add bookmarks with \hypertarget
+\usepackage{bookmark}
+\usepackage{hyperref}
+
+% heading numberging
+\setcounter{secnumdepth}{3}
+\renewcommand\thesection{{\fontUbuntu\arabic{section}}}
+\renewcommand\thesubsection{{\fontUbuntu\arabic{section}.\arabic{subsection}}}
+\renewcommand\thesubsubsection{{\fontUbuntu\arabic{section}.\arabic{subsection}.\arabic{subsubsection}}}
+\usepackage{sectsty}
+\allsectionsfont{\fontUbuntu}
+\setlength{\headheight}{14pt}
+
+% no indent at paragraphs
+\usepackage{parskip}
+\usepackage{setspace}
+\setstretch{1.1}
+\let\tmpitem\itemize
+\let\tmpenditem\enditemize
+\renewenvironment{itemize}{\tmpitem\setlength\itemsep{-.4em}}{\tmpenditem}
+
+$if(highlighting-macros)$
+$highlighting-macros$
+$endif$
+
+\begin{document}
+\raggedright
+\pagecolor{darkishyellow}
+
+\begin{titlepage}
+    .
+    \vskip 10em
+    \begin{center}
+        {\Huge\fontUbuntu ?title? \par}
+        \vskip 3em
+        {\huge\fontUbuntu $sub_title$ \par}
+    \end{center}
+    \null\vfill
+    {
+        \large
+        \lineskip .75em
+        \begin{tabular}{r l}
+                 Auther: $for(auther)$& $auther.name$ <$auther.email$> \\
+                         $endfor$\\
+             Class code: & ELERTS10 \\\\
+            Exported on: &\today
+
+        \end{tabular}
+    }
+\end{titlepage}
+
+\pagestyle{fancy}
+\fancyhead{} % clear all header fields
+\fancyhead[LO]{\color{gray}\fontUbuntu ?title?}
+\fancyhead[RO]{\color{gray}\fontUbuntu $sub_title$}
+\fancyfoot{} % clear all footer fields
+\fancyfoot[LO]{\color{gray}\fontUbuntu $for(auther)$$auther.name_short$${sep}, $endfor$}
+\fancyfoot[CO]{\color{gray}\fontUbuntu }
+\fancyfoot[RO]{\color{gray}\fontUbuntu \thepage}
+
+
+$if(lof)$
+\listoffigures
+$endif$
+$if(lot)$
+\listoftables
+$endif$
+$if(linestretch)$
+\setstretch{$linestretch$}
+$endif$
+
+
+$body$
+
+
+$if(nocite-ids)$
+\nocite{$for(nocite-ids)$$it$$sep$, $endfor$}
+$endif$
+$if(natbib)$
+$if(bibliography)$
+$if(biblio-title)$
+$if(has-chapters)$
+\renewcommand\bibname{$biblio-title$}
+$else$
+\renewcommand\refname{$biblio-title$}
+$endif$
+$endif$
+\bibliography{$for(bibliography)$$bibliography$$sep$,$endfor$}
+
+$endif$
+$endif$
+$if(biblatex)$
+\printbibliography$if(biblio-title)$[title=$biblio-title$]$endif$
+
+$endif$
+
+\end{document}
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..ed5f732
--- /dev/null
+++ b/makefile
@@ -0,0 +1,99 @@
+
+all: all_booklets all_docduments
+
+all_docduments: prepare pdf/assambly_report.pdf pdf/c_report.pdf
+all_booklets: prepare pdf/assambly_report.booklet.pdf pdf/c_report.booklet.pdf
+prepare:
+	mkdir -p latex pdf
+
+clean:
+	rm -r build latex
+
+clean_all:
+	rm -r build latex pdf
+
+install_arch:
+	mkdir -p build/install
+	pacman -Sy --noconfirm --needed curl unzip texlive-basic texlive-langeuropean pandoc
+
+	test -e build/install/ubuntu.zip || curl https://assets.ubuntu.com/v1/0cef8205-ubuntu-font-family-0.83.zip -o build/install/ubuntu.zip
+	test -d build/install/ubuntu && rm -r build/install/ubuntu || echo
+	mkdir build/install/ubuntu
+	unzip build/install/ubuntu.zip -d build/install/ubuntu
+	mkdir -p /usr/share/fonts/ubuntu
+	cp build/install/ubuntu/ubuntu-font-family-0.83/*.ttf /usr/share/fonts/ubuntu/
+	chmod 0775 /usr/share/fonts/ubuntu
+	chmod 0664 /usr/share/fonts/ubuntu/*
+
+	test -e build/install/roboto.zip || curl https://dl.dafont.com/dl/?f=roboto -o build/install/roboto.zip
+	test -d build/install/roboto && rm -r build/install/roboto || echo
+	 mkdir build/install/roboto
+	unzip build/install/roboto.zip -d build/install/roboto
+	mkdir -p /usr/share/fonts/roboto
+	cp build/install/roboto/*.ttf /usr/share/fonts/roboto/
+	chmod 0775 /usr/share/fonts/roboto
+	chmod 0664 /usr/share/fonts/roboto/*
+
+install_ubuntu:
+	mkdir -p build/install
+	apt-get update
+	DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
+		curl unzip texlive texlive-lang-european texlive-lang-greek texlive-xetex pandoc
+
+	test -e build/install/ubuntu.zip || curl https://assets.ubuntu.com/v1/0cef8205-ubuntu-font-family-0.83.zip -o build/install/ubuntu.zip
+	test -d build/install/ubuntu && rm -r build/install/ubuntu || echo
+	mkdir build/install/ubuntu
+	unzip build/install/ubuntu.zip -d build/install/ubuntu
+	mkdir -p /usr/share/fonts/ubuntu
+	cp build/install/ubuntu/ubuntu-font-family-0.83/*.ttf /usr/share/fonts/ubuntu/
+	chmod 0775 /usr/share/fonts/ubuntu
+	chmod 0664 /usr/share/fonts/ubuntu/*
+
+	test -e build/install/roboto.zip || curl https://dl.dafont.com/dl/?f=roboto -o build/install/roboto.zip
+	test -d build/install/roboto && rm -r build/install/roboto || echo
+	 mkdir build/install/roboto
+	unzip build/install/roboto.zip -d build/install/roboto
+	mkdir -p /usr/share/fonts/roboto
+	cp build/install/roboto/*.ttf /usr/share/fonts/roboto/
+	chmod 0775 /usr/share/fonts/roboto
+	chmod 0664 /usr/share/fonts/roboto/*
+
+# =======================================
+# === latex generation ==================
+# =======================================
+
+latex/assambly_report.latex: converters/mdToLatex.sh converters/template.latex report-1/*.md
+	mkdir -p build/assambly_report
+	bash converters/mdToLatex.sh report-1/assambly_report.md latex/assambly_report.latex
+
+latex/c_report.latex: converters/mdToLatex.sh converters/template.latex report-1/*.md
+	mkdir -p build/c_report
+	bash converters/mdToLatex.sh report-1/c_report.md latex/c_report.latex
+
+# =======================================
+# === pdf generation ====================
+# =======================================
+
+pdf/assambly_report.pdf: latex/assambly_report.latex
+	cd build/assambly_report && xelatex ../../latex/assambly_report.latex
+	cd build/assambly_report && xelatex ../../latex/assambly_report.latex
+	cd build/assambly_report && xelatex ../../latex/assambly_report.latex
+	mv build/assambly_report/assambly_report.pdf pdf/assambly_report.pdf
+
+pdf/assambly_report.booklet.pdf: converters/bookletify.latex pdf/assambly_report.pdf
+	mkdir -p build/assambly_report.booklet
+	sed -e 's|?pdf?|../../pdf/assambly_report.pdf|' converters/bookletify.latex >build/assambly_report.booklet/bookletify.latex
+	pdflatex -interaction=nonstopmode -output-directory="build/assambly_report.booklet" "build/assambly_report.booklet/bookletify.latex"
+	mv build/assambly_report.booklet/bookletify.pdf pdf/assambly_report.booklet.pdf
+
+pdf/c_report.pdf: latex/c_report.latex
+	cd build/c_report && xelatex ../../latex/c_report.latex
+	cd build/c_report && xelatex ../../latex/c_report.latex
+	cd build/c_report && xelatex ../../latex/c_report.latex
+	mv build/c_report/c_report.pdf pdf/c_report.pdf
+
+pdf/c_report.booklet.pdf: converters/bookletify.latex pdf/c_report.pdf
+	mkdir -p build/c_report.booklet
+	sed -e 's|?pdf?|../../pdf/c_report.pdf|' converters/bookletify.latex >build/c_report.booklet/bookletify.latex
+	pdflatex -interaction=nonstopmode -output-directory="build/c_report.booklet" "build/c_report.booklet/bookletify.latex"
+	mv build/c_report.booklet/bookletify.pdf pdf/c_report.booklet.pdf
diff --git a/report-1/assambly_assignments.md b/report-1/assambly_assignments.md
index 8467771..110fa97 100644
--- a/report-1/assambly_assignments.md
+++ b/report-1/assambly_assignments.md
@@ -1,12 +1,11 @@
 ---
 path: /elektro/hr/rts10/
 tags: kladjes, elektro, elektro/hr, elektro/hr/rts10
-auther: 
-  - Finley van Reenen (0964590@hr.nl)
-auther_short: "E.L.F. van Reenen"
 ---
 
-# Assembly Assignments
+[parent](/lLnsoW2yQlWpblaVBRFsYw)
+
+# Assembly Assignment
 
 This is the first report for _realtime systems 10_. I needed to do the following assignments:
 
@@ -38,8 +37,8 @@ I applied the same fix as last year. In the debug config, replace the `\` with a
 
 The algorithm in question is given in C code.
 
-```c-like=
-unsigned int multiply(unsigned int a , unsigned int b)
+```c {.numberLines}
+unsigned int multiply(unsigned int a, unsigned int b)
 {
     unsigned int m = 0;
     for (unsigned int i = 0; i != a; i ++)
@@ -52,8 +51,8 @@ unsigned int multiply(unsigned int a , unsigned int b)
 
 This code can be simplified without changing the algorithm by replacing the variable `i` with `b`. This will result in the following code.
 
-```c-like=
-unsigned int multiply ( unsigned int a , unsigned int b)
+```c {.numberLines}
+unsigned int multiply(unsigned int a, unsigned int b)
 {
     unsigned int m = 0;
     for (; b > 0; b --)
@@ -66,7 +65,7 @@ unsigned int multiply ( unsigned int a , unsigned int b)
 
 This is also the code I have implemented. The compiler puts _a_ in `R0` and _b_ in `R1`, I accepted them in place and used `R2` for _m_. At the end _m_ (`R2`) is moved to `R0` to set it as the return value. 
 
-```ass=
+```asm {.numberLines}
     .cpu cortex-m4
     .thumb
     .syntax unified
@@ -88,8 +87,8 @@ mul_exit:
 
 a better representation of the essembly code in C would be:
 
-```c-like=
-unsigned int multiply ( unsigned int a , unsigned int b)
+```c {.numberLines}
+unsigned int multiply(unsigned int a, unsigned int b)
 {
     unsigned int m = 0;
     if (b == 0) {
@@ -98,7 +97,7 @@ unsigned int multiply ( unsigned int a , unsigned int b)
 
     do
     {
-        m = m + b;
+        m = m + a;
         b --;
     } while (b > 0)
 
@@ -117,7 +116,7 @@ It does not take the branch at line 10 and at line 14 it takes the branch 65535
 
 Now a smarter version.
 
-```c-like=
+```c {.numberLines}
 unsigned int multiply(unsigned int a , unsigned int b)
 {
     unsigned int m = 0;
@@ -134,7 +133,7 @@ unsigned int multiply(unsigned int a , unsigned int b)
 }
 ```
 
-```asm=
+```asm {.numberLines}
     .cpu cortex-m4
     .thumb
     .syntax unified
@@ -162,8 +161,8 @@ bmul_exit:
 
 a better representation of the essembly code in C would be:
 
-```c-like=
-unsigned int multiply ( unsigned int a , unsigned int b)
+```c {.numberLines}
+unsigned int multiply(unsigned int a, unsigned int b)
 {
     unsigned int m = 0;
     if (b == 0) {
@@ -192,7 +191,7 @@ There are 7 instructions in the loop where one only runs every `1` bit in `b`. T
 
 ## Assignment 10: Using your multiply function to calculate the dot product of two vectors
 
-```c-like=
+```c {.numberLines}
 unsigned int dotProduct(unsigned int a[], unsigned int b[], size_t n)
 {
     unsigned int p = 0;
@@ -206,7 +205,7 @@ unsigned int dotProduct(unsigned int a[], unsigned int b[], size_t n)
 
 This function needs to call another and remember 5 variables (`*a`, `*b`, `n`, `p` and `i`). `R0` through⁣ `R3` are expected to change with a function call. There are only `R4` through `R7` left, only four spots. To solve this problem, I reversed the for loop by using n and decrementing it. This will not change the result since addition is not order sensitive. The code I implemented is the following.
 
-```c-like=
+```c {.numberLines}
 unsigned int dotProduct(unsigned int a[] , unsigned int b[], size_t n)
 {
     unsigned int p = 0;
@@ -225,7 +224,7 @@ unsigned int dotProduct(unsigned int a[] , unsigned int b[], size_t n)
 
 My assembly code:
 
-```asm=
+```asm {.numberLines}
     .cpu cortex-m4
     .thumb
     .syntax unified
@@ -252,5 +251,4 @@ dotp_loop:
 dotp_exit:
     MOVS.N  R0, R7      // move m to R0
     POP.N   {R4, R5, R6, R7, PC}
-    BX.N    LR
 ```
diff --git a/report-1/assambly_report.md b/report-1/assambly_report.md
new file mode 100644
index 0000000..38e7f77
--- /dev/null
+++ b/report-1/assambly_report.md
@@ -0,0 +1,16 @@
+---
+sub_title: "Real Time Systems 10"
+auther: 
+  - name: "Finley van Reenen (0964590)"
+    email: "mail@lailatheelf.nl"
+    name_short: "E.L.F. van Reenen"
+---
+
+# Assambly Report
+
+[toc]
+
+![](/report-1/assambly_assignments.md)
+
+![](/report-1/week_1.2.md)
+
diff --git a/report-1/week_1.2.md b/report-1/week_1.2.md
index 7ca7084..d4a60d6 100644
--- a/report-1/week_1.2.md
+++ b/report-1/week_1.2.md
@@ -146,7 +146,9 @@ while ((FLASH->ACR & /* ... */ ) == 0);
 Finaly we configur the PLL itself.
 
 $$
-f_{(VCO\ clock)} = f_{(PLL\ clock\ input)} \cdot (\frac{PLLN}{PLLM}) \\
+f_{(VCO\ clock)} = f_{(PLL\ clock\ input)} \cdot (\frac{PLLN}{PLLM})
+$$
+$$
 f_{(PLL\ general\ clock\ output)} = \frac{f_{(VCO\ clock)}}{PLLP}
 $$
 
diff --git a/report-2/c_report.md b/report-2/c_report.md
new file mode 100644
index 0000000..5ecf0af
--- /dev/null
+++ b/report-2/c_report.md
@@ -0,0 +1,13 @@
+---
+sub_title: "Real Time Systems 10"
+auther: 
+  - name: "Finley van Reenen (0964590)"
+    email: "mail@lailatheelf.nl"
+    name_short: "E.L.F. van Reenen"
+---
+
+# C Report
+
+[toc]
+
+![](/report-2/week_1.3.md)