Highlighting demo using Monokai dark theme.

#BEGIN_COMP SC  Marker with folding button in margin

#COMMAND Example command with parameters      
-10            integer parameter
+1.1e6         float parameter
T              Boolean parameter
Hello  World   string parameter

COMMAND  Commands lacking the # character are comments 
15

#END_COMP SC  End marker and component ID

#COMMAND
500           Comment

#END