2019-10-04 17:52:00

21 files changed, 338 insertions, 180 deletions

diff --git a/doc/context/documents/general/manuals/luametafun.pdf b/doc/context/documents/general/manuals/luametafun.pdf
index d0a19a3b5..188f1f21d 100644
--- a/doc/context/documents/general/manuals/luametafun.pdf
+++ b/doc/context/documents/general/manuals/luametafun.pdf
diff --git a/doc/context/documents/general/qrcs/setup-cs.pdf b/doc/context/documents/general/qrcs/setup-cs.pdf
index 33234564e..506dfc96a 100644
--- a/doc/context/documents/general/qrcs/setup-cs.pdf
+++ b/doc/context/documents/general/qrcs/setup-cs.pdf
diff --git a/doc/context/documents/general/qrcs/setup-de.pdf b/doc/context/documents/general/qrcs/setup-de.pdf
index 6b3768529..3265015ea 100644
--- a/doc/context/documents/general/qrcs/setup-de.pdf
+++ b/doc/context/documents/general/qrcs/setup-de.pdf
diff --git a/doc/context/documents/general/qrcs/setup-en.pdf b/doc/context/documents/general/qrcs/setup-en.pdf
index 8471d15b4..51102b6e7 100644
--- a/doc/context/documents/general/qrcs/setup-en.pdf
+++ b/doc/context/documents/general/qrcs/setup-en.pdf
diff --git a/doc/context/documents/general/qrcs/setup-fr.pdf b/doc/context/documents/general/qrcs/setup-fr.pdf
index 20aa6e88e..436f9f41d 100644
--- a/doc/context/documents/general/qrcs/setup-fr.pdf
+++ b/doc/context/documents/general/qrcs/setup-fr.pdf
diff --git a/doc/context/documents/general/qrcs/setup-it.pdf b/doc/context/documents/general/qrcs/setup-it.pdf
index f54ac45f8..09ba7f8cc 100644
--- a/doc/context/documents/general/qrcs/setup-it.pdf
+++ b/doc/context/documents/general/qrcs/setup-it.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-cs.pdf b/doc/context/documents/general/qrcs/setup-mapping-cs.pdf
index be096cfa0..c4f84e8e4 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-cs.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-cs.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-de.pdf b/doc/context/documents/general/qrcs/setup-mapping-de.pdf
index 6af69e8e5..4a8cec63f 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-de.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-de.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-en.pdf b/doc/context/documents/general/qrcs/setup-mapping-en.pdf
index 0ca8447f9..439349327 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-en.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-en.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-fr.pdf b/doc/context/documents/general/qrcs/setup-mapping-fr.pdf
index ece38b598..2ba16062a 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-fr.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-fr.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-it.pdf b/doc/context/documents/general/qrcs/setup-mapping-it.pdf
index 3d1e3f394..ecd479c4b 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-it.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-it.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-nl.pdf b/doc/context/documents/general/qrcs/setup-mapping-nl.pdf
index a6b35b0df..0ddd7011d 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-nl.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-nl.pdf
diff --git a/doc/context/documents/general/qrcs/setup-mapping-ro.pdf b/doc/context/documents/general/qrcs/setup-mapping-ro.pdf
index 3a9c33053..15edacd00 100644
--- a/doc/context/documents/general/qrcs/setup-mapping-ro.pdf
+++ b/doc/context/documents/general/qrcs/setup-mapping-ro.pdf
diff --git a/doc/context/documents/general/qrcs/setup-nl.pdf b/doc/context/documents/general/qrcs/setup-nl.pdf
index 8b47f596c..d389a21cb 100644
--- a/doc/context/documents/general/qrcs/setup-nl.pdf
+++ b/doc/context/documents/general/qrcs/setup-nl.pdf
diff --git a/doc/context/documents/general/qrcs/setup-ro.pdf b/doc/context/documents/general/qrcs/setup-ro.pdf
index fd120f187..3ec2dc1db 100644
--- a/doc/context/documents/general/qrcs/setup-ro.pdf
+++ b/doc/context/documents/general/qrcs/setup-ro.pdf
diff --git a/doc/context/scripts/mkiv/mtx-update.html b/doc/context/scripts/mkiv/mtx-update.html
deleted file mode 100644
index ed7363ca0..000000000
--- a/doc/context/scripts/mkiv/mtx-update.html
+++ /dev/null
@@ -1,66 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-
-<!-- compare with lmx framework variant -->
-
-<!--
-    filename : context-base.xml
-    comment  : companion to mtx-server-ctx-startup.tex
-    author   : Hans Hagen, PRAGMA-ADE, Hasselt NL
-    copyright: PRAGMA ADE / ConTeXt Development Team
-    license  : see context related readme files
--->
-
-<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
-    <head>
-        <title>ConTeXt Minimals Updater 1.03</title>
-        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
-                <style type="text/css">
-            body { color: #FFFFFF; background-color: #808080; font-family: optima, verdana, futura, "lucida sans", arial, geneva, helvetica, sans; font-size: 12px; line-height: 18px; } a:link, a:active, a:visited { color: #FFFFFF; } a.dir-view:link, a.dir-view:active, a.dir-view:visited { color: #FFFFFF; text-decoration: underline; } .valid { color: #00FF00; } .invalid { color: #FF0000; } .invisible { visibility: hidden; } button, .commonlink, .smallbutton { font-weight: bold; font-size: 12px; text-decoration: none; color: #000000; border-color: #7F7F7F; border-style: solid; border-width: .125ex; background-color: #FFFFFF; padding: .5ex; } .smallbutton { width: 1em; } a.commonlink:link, a.commonlink:active, a.commonlink:visited, a.smalllink:link, a.smalllink:active, a.smalllink:visited { font-weight: bold; font-size: 12px; text-decoration: none; color: #000000; } h1, .title { font-style: normal; font-weight: normal; font-size: 18px; line-height: 18px; margin-bottom: 20px; } h2, .subtitle { font-style: normal; font-weight: normal; font-size: 12px; margin-top: 18px; margin-bottom: 18px; } table { line-height: 18px; font-size: 12px; margin: 0; } th { font-weight: bold; text-align: left; padding-bottom: 6px; } .tc { font-weight: bold; text-align: left; } p, li { max-width: 60em; } .empty-line { margin-top: 4px; } .more-room { margin-right: 1.5em; } .much-more-room { margin-right: 3em; } #main { position: absolute; left: 10%; top: 10%; right: 10%; bottom: 10%; z-index: 2; width: 80%; height: 80%; padding: 0%; margin: 0%; overflow: auto; border-style: none; border-width: 0; background-color: #3F3F3F; } #main-settings { margin: 12px; x_max-width: 60em; line-height: 18px; font-size: 12px; } #left { position: absolute; top : 10%; left: 0%; bottom: 0%; right: 90%; z-index: 1; width: 10%; height: 90%; padding: 0%; margin: 0%; font-size: 16px; border-style: none; border-width: 0; background-color: #4F6F6F; } #right { position: absolute; top : 0%; left: 90%; bottom: 10%; right: 0%; z-index: 1; width: 10%; height: 90%; padding: 0%; margin: 0%; font-size: 16px; border-style: none; border-width: 0; background-color: #4F6F6F; _margin-left: -15px; } #bottom { position: absolute; left: 10%; right: 0%; top: 90%; bottom: 0%; z-index: 1; width: 90%; height: 10%; padding: 0%; margin: 0%; font-size: 16px; border-style: none; border-width: 0; background-color: #6F6F8F; } #top { position: absolute; left: 0%; right: 10%; top: 0%; bottom: 90%; z-index: 1; width: 90%; height: 10%; padding: 0%; margin: 0%; font-size: 16px; border-style: none; border-width: 0; background-color: #6F6F8F; } #top-one { position: absolute; bottom: 50%; width: 100%; buggedheight: 100%; } #top-two { position: relative; margin-bottom: -9px; margin-left: 12px; margin-right: 12px; line-height: 18px; text-align: right; vertical-align: middle; } #bottom-one { position: absolute; bottom: 50%; width: 100%; buggedheight: 100%; } #bottom-two { position: relative; margin-bottom: -9px; margin-left: 12px; margin-right: 12px; line-height: 18px; text-align: left; vertical-align: middle; } #left-one { position: absolute; width: 100%; buggedheight: 100%; } #left-two { position: relative; margin-top: 12px; line-height: 18px; text-align: center; vertical-align: top; } #right-one { display: table; height: 100%; width: 100%; } #right-two { display: table-row; height: 100%; width: 100%; } #right-three { display: table-cell; width: 100%; vertical-align: bottom; _position: absolute; _top: 100%; } #right-four { text-align: center; margin-bottom: 2ex; _position: relative; _top: -100%; } #more-top { position: absolute; top: 0%; left: 90%; bottom: 90%; right: 0%; z-index: 3; width: 10%; height: 10%; padding: 0%; margin: 0%; border-style: none; border-width: 0; } #more-top-settings { text-align: center; } #more-right-settings { margin-right: 12px; margin-left: 12px; line-height: 18px; font-size: 10px; text-align: center; } #right-safari { _display: table; width: 100%; height: 100%; } 
-        </style>
-        <style type="text/css">
-                    </style>
-                    </head>
-        <body>
-            <div id="top">            <div id="top-one">
-                <div id="top-two">ConTeXt Minimals Updater 1.03 </div>
-            </div>
-        </div>
-        <div id="bottom">            <div id="bottom-one">
-                <div id="bottom-two">wiki: http://contextgarden.net | mail: ntg-context@ntg.nl | website: http://www.pragma-ade.nl</div>
-            </div>
-        </div>
-        <div id="left"></div>
-        <div id="right"></div>
-        <div id="main">
-            <div id='main-settings'>
-                <h1>Command line options</h1>
-<table>
-    <tr><th style="width: 10em">flag</th><th style="width: 8em">value</th><th>description</th></tr>
-        <tr><th/><td/><td/></tr>
-        <tr><th>--platform</th><td>string</td><td>platform (windows, linux, linux-64, osx-intel, osx-ppc, linux-ppc)</td></tr>
-        <tr><th>--server</th><td>string</td><td>repository url (rsync://contextgarden.net)</td></tr>
-        <tr><th>--module</th><td>string</td><td>repository url (minimals)</td></tr>
-        <tr><th>--repository</th><td>string</td><td>specify version (current, experimental)</td></tr>
-        <tr><th>--context</th><td>string</td><td>specify version (current, latest, beta, yyyy.mm.dd)</td></tr>
-        <tr><th>--rsync</th><td>string</td><td>rsync binary (rsync)</td></tr>
-        <tr><th>--texroot</th><td>string</td><td>installation directory (not guessed for the moment)</td></tr>
-        <tr><th>--engine</th><td>string</td><td>tex engine (luatex, pdftex, xetex)</td></tr>
-        <tr><th>--modules</th><td>string</td><td>extra modules (can be list or 'all')</td></tr>
-        <tr><th>--fonts</th><td>string</td><td>additional fonts (can be list or 'all')</td></tr>
-        <tr><th>--goodies</th><td>string</td><td>extra binaries (like scite and texworks)</td></tr>
-        <tr><th>--force</th><td></td><td>instead of a dryrun, do the real thing</td></tr>
-        <tr><th>--update</th><td></td><td>update minimal tree</td></tr>
-        <tr><th>--make</th><td></td><td>also make formats and generate file databases</td></tr>
-        <tr><th>--keep</th><td></td><td>don't delete unused or obsolete files</td></tr>
-        <tr><th>--state</th><td></td><td>update tree using saved state</td></tr>
-        <tr><th>--cygwin</th><td></td><td>adapt drive specs to cygwin</td></tr>
-        <tr><th>--mingw</th><td></td><td>assume mingw binaries being used</td></tr>
-        <tr><th>--silent</th><td></td><td>less (or no) logging</td></tr>
-    </table>
-<br/>
-            </div>
-        </div>
-        </body>
-</html>
diff --git a/doc/context/scripts/mkiv/mtx-update.man b/doc/context/scripts/mkiv/mtx-update.man
deleted file mode 100644
index a4ecef639..000000000
--- a/doc/context/scripts/mkiv/mtx-update.man
+++ /dev/null
@@ -1,81 +0,0 @@
-.TH "mtx-update" "1" "01-01-2019" "version 1.03" "ConTeXt Minimals Updater"
-.SH NAME
- mtx-update - ConTeXt Minimals Updater
-.SH SYNOPSIS
-.B mtxrun --script update [
-.I OPTIONS ...
-.B ] [
-.I FILENAMES
-.B ]
-.SH DESCRIPTION
-.B ConTeXt Minimals Updater
-.SH OPTIONS
-.TP
-.B --platform=string
-platform (windows, linux, linux-64, osx-intel, osx-ppc, linux-ppc)
-.TP
-.B --server=string
-repository url (rsync://contextgarden.net)
-.TP
-.B --module=string
-repository url (minimals)
-.TP
-.B --repository=string
-specify version (current, experimental)
-.TP
-.B --context=string
-specify version (current, latest, beta, yyyy.mm.dd)
-.TP
-.B --rsync=string
-rsync binary (rsync)
-.TP
-.B --texroot=string
-installation directory (not guessed for the moment)
-.TP
-.B --engine=string
-tex engine (luatex, pdftex, xetex)
-.TP
-.B --modules=string
-extra modules (can be list or 'all')
-.TP
-.B --fonts=string
-additional fonts (can be list or 'all')
-.TP
-.B --goodies=string
-extra binaries (like scite and texworks)
-.TP
-.B --force
-instead of a dryrun, do the real thing
-.TP
-.B --update
-update minimal tree
-.TP
-.B --make
-also make formats and generate file databases
-.TP
-.B --keep
-don't delete unused or obsolete files
-.TP
-.B --state
-update tree using saved state
-.TP
-.B --cygwin
-adapt drive specs to cygwin
-.TP
-.B --mingw
-assume mingw binaries being used
-.TP
-.B --silent
-less (or no) logging
-.SH AUTHOR
-More information about ConTeXt and the tools that come with it can be found at:
-
-
-.B "maillist:"
-ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
-
-.B "webpage:"
-http://www.pragma-ade.nl / http://tex.aanhet.net
-
-.B "wiki:"
-http://contextgarden.net
diff --git a/doc/context/scripts/mkiv/mtx-update.xml b/doc/context/scripts/mkiv/mtx-update.xml
deleted file mode 100644
index 818b994fd..000000000
--- a/doc/context/scripts/mkiv/mtx-update.xml
+++ /dev/null
@@ -1,33 +0,0 @@
-<?xml version="1.0"?>
-<application>
- <metadata>
-  <entry name="name">mtx-update</entry>
-  <entry name="detail">ConTeXt Minimals Updater</entry>
-  <entry name="version">1.03</entry>
- </metadata>
- <flags>
-  <category name="basic">
-   <subcategory>
-    <flag name="platform" value="string"><short>platform (windows, linux, linux-64, osx-intel, osx-ppc, linux-ppc)</short></flag>
-    <flag name="server" value="string"><short>repository url (rsync://contextgarden.net)</short></flag>
-    <flag name="module" value="string"><short>repository url (minimals)</short></flag>
-    <flag name="repository" value="string"><short>specify version (current, experimental)</short></flag>
-    <flag name="context" value="string"><short>specify version (current, latest, beta, yyyy.mm.dd)</short></flag>
-    <flag name="rsync" value="string"><short>rsync binary (rsync)</short></flag>
-    <flag name="texroot" value="string"><short>installation directory (not guessed for the moment)</short></flag>
-    <flag name="engine" value="string"><short>tex engine (luatex, pdftex, xetex)</short></flag>
-    <flag name="modules" value="string"><short>extra modules (can be list or 'all')</short></flag>
-    <flag name="fonts" value="string"><short>additional fonts (can be list or 'all')</short></flag>
-    <flag name="goodies" value="string"><short>extra binaries (like scite and texworks)</short></flag>
-    <flag name="force"><short>instead of a dryrun, do the real thing</short></flag>
-    <flag name="update"><short>update minimal tree</short></flag>
-    <flag name="make"><short>also make formats and generate file databases</short></flag>
-    <flag name="keep"><short>don't delete unused or obsolete files</short></flag>
-    <flag name="state"><short>update tree using saved state</short></flag>
-    <flag name="cygwin"><short>adapt drive specs to cygwin</short></flag>
-    <flag name="mingw"><short>assume mingw binaries being used</short></flag>
-    <flag name="silent"><short>less (or no) logging</short></flag>
-   </subcategory>
-  </category>
- </flags>
-</application>
diff --git a/doc/context/sources/general/manuals/luametafun/luametafun-fonts.tex b/doc/context/sources/general/manuals/luametafun/luametafun-fonts.tex
new file mode 100644
index 000000000..27ea2fd00
--- /dev/null
+++ b/doc/context/sources/general/manuals/luametafun/luametafun-fonts.tex
@@ -0,0 +1,328 @@
+% language=us
+
+\environment luametafun-style
+
+\startcomponent luametafun-fonts
+
+\startchapter[title={Fonts}]
+
+Fonts are interesting phenomena but can also be quite hairy. Shapes can be
+missing or not to your liking. There can be bugs too. Control over fonts has
+always been on the agenda of \TEX\ macro packages, and \CONTEXT\ provides a lot
+of control, especially in \MKIV. In \LMTX\ we add some more to that: we bring
+back \METAFONT's but now in the \METAPOST\ way. A simple example shows how this
+is (maybe I should say: will be) done.
+
+We define three simple shapes and do that (for now) in the \type {simplefun}
+instance because that's what is used when generating the glyphs.
+
+\startbuffer
+\startMPcalculation{simplefun}
+    vardef TestGlyphLB =
+        image (
+            fill (unitsquare xscaled 10 yscaled 16 shifted (0,-3))
+                withcolor "darkred" withtransparency (1,.5)
+            ;
+        )
+    enddef ;
+
+    vardef TestGlyphRB =
+        image (
+            fill (unitcircle xscaled 15 yscaled 12 shifted (0,-2))
+                withcolor "darkblue" withtransparency (1,.5)
+            ;
+        )
+    enddef ;
+
+    vardef TestGlyphFS =
+        image (
+            fill (unittriangle xscaled 15 yscaled 12 shifted (0,-2))
+                withcolor "darkgreen" withtransparency (1,.5)
+            ;
+        )
+    enddef ;
+\stopMPcalculation
+\stopbuffer
+
+\typebuffer[option=TEX] \getbuffer
+
+This is not that spectacular, not is the following:
+
+\startbuffer
+\startMPcalculation{simplefun}
+    lmt_registerglyphs [
+        name  = "test",
+        units = 10, % 1000
+    ] ;
+
+    lmt_registerglyph [
+        category = "test",
+        unicode  = 123,
+        code     = "draw TestGlyphLB ;",
+        width    = 10, % 1000
+        height   = 13, % 1300
+        depth    = 3   %  300
+    ] ;
+
+    lmt_registerglyph [
+        category = "test",
+        unicode  = 125,
+        code     = "draw TestGlyphRB ;",
+        width    = 15,
+        height   = 10,
+        depth    = 2
+    ] ;
+
+    lmt_registerglyph [
+        category = "test",
+        unicode  = "/",
+        code     = "draw TestGlyphFS ;",
+        width    = 15,
+        height   = 10,
+        depth    = 2
+    ] ;
+
+\stopMPcalculation
+\stopbuffer
+
+\typebuffer[option=TEX] \getbuffer
+
+We now define a font. We always use a font as starting point which has the
+advantage that we always get something reasonable when we test. Of course you can
+use this \type {mps} font feature with other fonts too.
+
+\startbuffer
+\definefontfeature[metapost][metapost=test] % or: mps={category=test}
+
+\definefont[MyFontA][Serif*metapost @ 10bp]
+\definefont[MyFontB][Serif*metapost @ 12bp]
+\stopbuffer
+
+\typebuffer[option=TEX] \getbuffer
+
+These fonts can now be used:
+
+\startbuffer
+\MyFontA \dorecurse{20}{\{ /#1/ \} }\par
+\MyFontB \dorecurse{20}{\{ /#1/ \} }\par
+\stopbuffer
+
+\typebuffer[option=TEX]
+
+We get some useless text but it demonstrates the idea:
+
+{\getbuffer}
+
+If you know a bit more about \CONTEXT\ you could think: so what, wasn't this
+already possible? Sure, there are various ways to achieve similar effects, but
+the method described here has a few advantages: it's relatively easy and we're
+talking about real fonts here. This means that using the shapes for characters is
+pretty efficient.
+
+A more realistic example is given next. It is a subset of what is available in
+the \CONTEXT\ core.
+
+\startbuffer
+\startMPcalculation{simplefun}
+
+    pen SymbolPen ; SymbolPen := pencircle scaled 1/4 ;
+
+    vardef SymbolBullet =
+        fill unitcircle scaled  3 shifted (1.5,1.5) withpen SymbolPen
+    enddef ;
+    vardef SymbolSquare =
+        draw unitsquare scaled (3-1/16) shifted (1.5,1.5) withpen SymbolPen
+    enddef ;
+    vardef SymbolBlackDiamond =
+        fillup unitdiamond scaled (3-1/16) shifted (1.5,1.5) withpen SymbolPen
+    enddef ;
+    vardef SymbolNotDef =
+        draw center unitcircle
+            scaled 3
+            shifted (1.5,1.5)
+            withpen SymbolPen scaled 4
+    enddef ;
+
+    lmt_registerglyphs [
+        name     = "symbols",
+        units    = 10,
+        usecolor = true,
+        width    = 6,
+        height   = 6,
+        depth    = 0,
+        code     = "SymbolNotDef ;",
+    ] ;
+
+    lmt_registerglyph [ category = "symbols", unicode = "0x2022",
+        code  = "SymbolBullet ;"
+    ] ;
+    lmt_registerglyph [ category = "symbols", unicode = "0x25A1",
+        code  = "SymbolSquare ;"
+    ] ;
+    lmt_registerglyph [ category = "symbols", unicode = "0x25C6",
+        code  = "SymbolBlackDiamond ;"
+    ] ;
+\stopMPcalculation
+\stopbuffer
+
+\typebuffer[option=TEX] \getbuffer
+
+We could use these symbols in for instance itemize symbols. You might notice the
+potential difference in bullets:
+
+\startbuffer
+\definefontfeature[metapost][metapost=symbols]
+
+\definefont[MyFont] [Serif*metapost sa 1]
+
+\startitemize[packed]
+    \startitem {\MyFont                 • □ ◆}\quad Regular rendering. \stopitem
+    \startitem {\MyFont\red             • □ ◆}\quad Rendering with color. \stopitem
+    \startitem {\MyFont\blue\showglyphs • □ ◆}\quad Idem but with boundingboxes shown. \stopitem
+\stopitemize
+\stopbuffer
+
+\typebuffer[option=TEX] \getbuffer
+
+When blown up, these symbols look as follows:
+
+\startlinecorrection
+\scale[width=\textwidth]{%
+    {\MyFont                 •□◆}%
+    {\MyFont\red             •□◆}%
+    {\MyFont\blue\showglyphs •□◆}%
+}
+\stoplinecorrection
+
+You can use these tricks with basically any font, so also with math fonts.
+However, at least for now, you need to define these before the font gets loaded.
+
+\startbuffer
+\startMPcalculation{simplefun}
+
+    pen KindergartenPen ; KindergartenPen := pencircle scaled 1 ;
+
+    % 10 x 10 grid
+
+    vardef KindergartenEqual =
+        draw image
+            (
+                draw (2,6) -- (9,5) ;
+                draw (2,4) -- (8,3) ;
+            )
+            shifted (0,-2)
+            withpen KindergartenPen
+            withcolor "KindergartenEqual"
+    enddef ;
+    vardef KindergartenPlus =
+        draw image
+            (
+                draw (1,4) -- (9,5) ;
+                draw (4,1) -- (5,8) ;
+            )
+            shifted (0,-2)
+            withpen KindergartenPen
+            withcolor "KindergartenPlus"
+    enddef ;
+    vardef KindergartenMinus =
+        draw image
+            (
+                draw (1,5) -- (9,4) ;
+            )
+            shifted (0,-2)
+            withpen KindergartenPen
+            withcolor "KindergartenMinus"
+    enddef ;
+    vardef KindergartenTimes =
+        draw image
+            (
+                draw (2,1) -- (9,8) ;
+                draw (8,1) -- (2,8) ;
+            )
+            shifted (0,-2)
+            withpen KindergartenPen
+            withcolor "KindergartenTimes"
+    enddef ;
+    vardef KindergartenDivided =
+        draw image
+            (
+                draw (2,1) -- (8,9) ;
+            )
+            shifted (0,-2)
+            withpen KindergartenPen
+            withcolor "KindergartenDivided"
+    enddef ;
+
+    lmt_registerglyphs [
+        name     = "kindergarten",
+        units    = 10,
+      % usecolor = true,
+        width    = 10,
+        height   = 8,
+        depth    = 2,
+    ] ;
+
+    lmt_registerglyph [ category = "kindergarten", unicode = "0x003D",
+        code = "KindergartenEqual"
+    ] ;
+    lmt_registerglyph [ category = "kindergarten", unicode = "0x002B",
+        code = "KindergartenPlus"
+    ] ;
+    lmt_registerglyph [ category = "kindergarten", unicode = "0x2212",
+        code = "KindergartenMinus"
+    ] ;
+    lmt_registerglyph [ category = "kindergarten", unicode = "0x00D7",
+        code = "KindergartenTimes"
+    ] ;
+    lmt_registerglyph [ category = "kindergarten", unicode = "0x002F",
+        code = "KindergartenDivided"
+    ] ;
+
+\stopMPcalculation
+\stopbuffer
+
+\typebuffer[option=TEX] \getbuffer
+
+We also define the colors. If we leave \type {usecolor} to true, the text colors
+will be taken.
+
+\startbuffer[definitions]
+\definecolor[KindergartenEqual]  [darkgreen]
+\definecolor[KindergartenPlus]   [darkred]
+\definecolor[KindergartenMinus]  [darkred]
+\definecolor[KindergartenTimes]  [darkblue]
+\definecolor[KindergartenDivided][darkblue]
+
+\definefontfeature[mathextra][metapost=kindergarten]
+\stopbuffer
+
+\typebuffer[definitions][option=TEX] \getbuffer[definitions]
+
+Here is an example:
+
+\starttyping
+\switchtobodyfont[cambria]
+
+$ y = 2 \times x + a - b / 3 $
+\stoptyping
+
+Scaled up:
+
+\startlinecorrection
+    \switchtobodyfont[cambria]
+    \scale[width=\textwidth]{$ y = 2 \times x + a - b / 3 $}
+\stoplinecorrection
+
+Of course this won't work out well (yet) with extensible yet, due to related
+definitions for which we don't have an interface yet. There is one thing that you
+need to keep in mind: the fonts are flushed when the document gets finalized so
+you have to make sure that colors are defined at the level that they are still
+valid at that time. So best put color definitions like the above in the document
+style.
+
+This is an experimental interface anyway so we don't explain the parameters yet
+as there might be more of them.
+
+\stopchapter
+
+\stopcomponent
diff --git a/doc/context/sources/general/manuals/luametafun/luametafun-style.tex b/doc/context/sources/general/manuals/luametafun/luametafun-style.tex
index df469d0c0..63eb7e375 100644
--- a/doc/context/sources/general/manuals/luametafun/luametafun-style.tex
+++ b/doc/context/sources/general/manuals/luametafun/luametafun-style.tex
@@ -52,4 +52,13 @@
   [before=,
    after=]
 
+% sectionblocks keep things local and we need these colors very late,
+% when we flush fonts
+
+\definecolor[KindergartenEqual]  [darkgreen]
+\definecolor[KindergartenPlus]   [darkred]
+\definecolor[KindergartenMinus]  [darkred]
+\definecolor[KindergartenTimes]  [darkblue]
+\definecolor[KindergartenDivided][darkblue]
+
 \stopenvironment
diff --git a/doc/context/sources/general/manuals/luametafun/luametafun.tex b/doc/context/sources/general/manuals/luametafun/luametafun.tex
index 6f5aff173..52b7a6800 100644
--- a/doc/context/sources/general/manuals/luametafun/luametafun.tex
+++ b/doc/context/sources/general/manuals/luametafun/luametafun.tex
@@ -26,6 +26,7 @@
         \component luametafun-function
         \component luametafun-chart
         \component luametafun-svg
+        \component luametafun-fonts
         \component luametafun-interface
     \stopbodymatter