d.mon: notes on functionality added

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@71502 15284696-431f-4ddb-bdfa-cd5b030d7da7

display/d.mon/main.c

@@ -12,6 +12,18 @@
  *
  *****************************************************************************/
 
+/*
+ Functionality:
+
+ d.mon delegates rendering to Python script [1] through GRASS_RENDER_COMMAND [2].
+ See also document [3].
+
+ [1] https://trac.osgeo.org/grass/browser/grass/trunk/display/d.mon/render_cmd.py
+ [2] https://trac.osgeo.org/grass/browser/grass/trunk/lib/display/r_raster.c#L107
+ [3] https://grass.osgeo.org/grass72/manuals/displaydrivers.html
+
+*/
+
 #include <stdlib.h>
 #include <string.h>
 

display/displaydrivers.html

@@ -27,7 +27,7 @@ defined by this variable. Currently only Python scrips are supported.
 Lets start with simple example of Python script called <i>render.py</i>:
 
 <div class="code"><pre>
-#!/usr/bin/evn python
+#!/usr/bin/env python
 
 import os
 import sys