& btmapemit()
Error Messages:
* If <MapDB> is not valid the function returns #-1 INVALID MAP
* If <message> is not valid (eg a null string) the function returns
#-1 INVALID MESSAGE
Example:
Given that #62 is a valid mapobject
> think btmapemit(#62, Fascinating Message)
1
The occupant(s) of any units on the map will see:
Fascinating Message