ADDED   doc/build.md
Index: doc/build.md
==================================================================
--- /dev/null
+++ doc/build.md
@@ -0,0 +1,69 @@
+
+BUILDER
+
+# Required #
+
+    Python 3.6
+    Firefox Nightly
+    NodeJS
+        npm
+        jpm
+    Thunderbird
+
+
+# Commands #
+
+## build a language ##
+
+    make.py LANG
+        generate the LibreOffice extension and the package folder.
+        LANG is the lang code (ISO 639).
+
+        This script uses the file `config.ini` in the folder `gc_lang/LANG`.
+
+## First build ##
+
+    Type:
+        make.py LANG -js
+
+    This command is required to generate all necessary files.
+
+## options ##
+
+    -b --build_data
+        Launch the script `build_data.py` in the folder `gc_lang/LANG`.
+
+    -d --dict
+        Generate the indexable binary dictionary from the lexicon in the folder `lexicons`.
+
+    -js --javascript
+        Also generate JavaScript extensions.
+        Without this option only Python modules, data and extensions are generated.
+
+    -t --tests
+        Run unit tests.
+
+    -i --install
+        Install the LibreOffice extension.
+
+    -fx --firefox
+        Launch Firefox Nightly.
+        Unit tests can be lanched from Firefox, with CTRL+SHIFT+F12.
+
+    -tb --thunderbird
+        Launch Thunderbird.
+
+
+# Examples #
+
+    Full rebuild:
+        make.py LANG -b -d -js
+
+    After modifying grammar rules:
+        make.py LANG -t
+
+    If you modify the lexicon:
+        make.py LANG -d -js
+
+    If you modify your script build_data.py:
+        make.py LANG -b -js

DELETED doc/build.txt
Index: doc/build.txt
==================================================================
--- doc/build.txt
+++ /dev/null
@@ -1,69 +0,0 @@
-
-BUILDER
-
-# Required #
-
-    Python 3.6
-    Firefox Nightly
-    NodeJS
-        npm
-        jpm
-    Thunderbird
-
-
-# Commands #
-
-## build a language ##
-
-    make.py LANG
-        generate the LibreOffice extension and the package folder.
-        LANG is the lang code (ISO 639).
-
-        This script uses the file `config.ini` in the folder `gc_lang/LANG`.
-
-## First build ##
-
-    Type:
-        make.py LANG -js
-
-    This command is required to generate all necessary files.
-
-## options ##
-
-    -b --build_data
-        Launch the script `build_data.py` in the folder `gc_lang/LANG`.
-
-    -d --dict
-        Generate the indexable binary dictionary from the lexicon in the folder `lexicons`.
-
-    -js --javascript
-        Also generate JavaScript extensions.
-        Without this option only Python modules, data and extensions are generated.
-
-    -t --tests
-        Run unit tests.
-
-    -i --install
-        Install the LibreOffice extension.
-
-    -fx --firefox
-        Launch Firefox Nightly.
-        Unit tests can be lanched from Firefox, with CTRL+SHIFT+F12.
-
-    -tb --thunderbird
-        Launch Thunderbird.
-
-
-# Examples #
-
-    Full rebuild:
-        make.py LANG -b -d -js
-
-    After modifying grammar rules:
-        make.py LANG -t
-
-    If you modify the lexicon:
-        make.py LANG -d -js
-
-    If you modify your script build_data.py:
-        make.py LANG -b -js