Add link to extern in function documentation

help/cbot/E/function.txt

@@ -11,7 +11,7 @@ You probably already know how to create a function. Every program in CBOT must h
 \s;	
 \s;}
 \n;
-Nothing but a name can be changed in the main function. The keyword \c;extern\n; distinguish the main function from others.
+Nothing but a name can be changed in the main function. The keyword \c;\l;extern\u cbot\extern;\n; distinguish the main function from others.
 
 \b;Basic use
 With functions you can divide your program into several parts. Each of them will execute a specific task. For example, see the following program:

help/cbot/po/cbot.pot

@@ -6068,12 +6068,6 @@ msgid ""
 "}"
 msgstr ""
 
-#. type: Plain text
-#: ../E/function.txt:14
-#, no-wrap
-msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
-msgstr ""
-
 #. type: Plain text
 #: ../E/function.txt:56
 #, no-wrap
@@ -6740,6 +6734,15 @@ msgstr ""
 msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar to <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 msgstr ""
 
+#. type: Plain text
+#: ../E/function.txt:14
+#, no-wrap
+msgid "Nothing but a name can be changed in the main function. The keyword <code><a cbot|extern>extern</a></code> distinguish the main function from others."
+msgstr ""
+
+#~ msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
+#~ msgstr ""
+
 #~ msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 #~ msgstr ""
 

help/cbot/po/de.po

@@ -6890,12 +6890,6 @@ msgid ""
 "}"
 msgstr ""
 
-#. type: Plain text
-#: ../E/function.txt:14
-#, no-wrap
-msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
-msgstr ""
-
 #. type: Plain text
 #: ../E/function.txt:56
 #, no-wrap
@@ -7562,6 +7556,15 @@ msgstr ""
 msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar to <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 msgstr ""
 
+#. type: Plain text
+#: ../E/function.txt:14
+#, no-wrap
+msgid "Nothing but a name can be changed in the main function. The keyword <code><a cbot|extern>extern</a></code> distinguish the main function from others."
+msgstr ""
+
+#~ msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
+#~ msgstr ""
+
 #~ msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 #~ msgstr ""
 

help/cbot/po/fr.po

@@ -6846,12 +6846,6 @@ msgid ""
 "}"
 msgstr ""
 
-#. type: Plain text
-#: ../E/function.txt:14
-#, no-wrap
-msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
-msgstr ""
-
 #. type: Plain text
 #: ../E/function.txt:56
 #, no-wrap
@@ -7518,6 +7512,15 @@ msgstr ""
 msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar to <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 msgstr ""
 
+#. type: Plain text
+#: ../E/function.txt:14
+#, no-wrap
+msgid "Nothing but a name can be changed in the main function. The keyword <code><a cbot|extern>extern</a></code> distinguish the main function from others."
+msgstr ""
+
+#~ msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
+#~ msgstr ""
+
 #~ msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 #~ msgstr ""
 

help/cbot/po/pl.po

@@ -6895,12 +6895,6 @@ msgid ""
 "}"
 msgstr ""
 
-#. type: Plain text
-#: ../E/function.txt:14
-#, no-wrap
-msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
-msgstr ""
-
 #. type: Plain text
 #: ../E/function.txt:56
 #, no-wrap
@@ -7567,6 +7561,15 @@ msgstr ""
 msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar to <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 msgstr ""
 
+#. type: Plain text
+#: ../E/function.txt:14
+#, no-wrap
+msgid "Nothing but a name can be changed in the main function. The keyword <code><a cbot|extern>extern</a></code> distinguish the main function from others."
+msgstr ""
+
+#~ msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
+#~ msgstr ""
+
 #~ msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 #~ msgstr ""
 

help/cbot/po/ru.po

@@ -6855,12 +6855,6 @@ msgid ""
 "}"
 msgstr ""
 
-#. type: Plain text
-#: ../E/function.txt:14
-#, no-wrap
-msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
-msgstr ""
-
 #. type: Plain text
 #: ../E/function.txt:56
 #, no-wrap
@@ -7527,6 +7521,15 @@ msgstr ""
 msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar to <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 msgstr ""
 
+#. type: Plain text
+#: ../E/function.txt:14
+#, no-wrap
+msgid "Nothing but a name can be changed in the main function. The keyword <code><a cbot|extern>extern</a></code> distinguish the main function from others."
+msgstr ""
+
+#~ msgid "Nothing but a name can be changed in the main function. The keyword <code>extern</code> distinguish the main function from others."
+#~ msgstr ""
+
 #~ msgid "Determines the position of the nearest free space with at least <code>flatmin</code> of flat ground around a given position. Works similar <c/><a cbot|space>space();</a><n/>. Useful for finding a place for a <a cbot|category>building</a>."
 #~ msgstr ""