From: stephen_ on
Is pointToChar working?

char_num = sprite( 1 ).pointToChar( _mouse.mouseLoc )
char_loc = sprite( 1 ).member.charPosToLoc( char_num )
line_num = sprite( 1 ).member.locVToLinePos( char_loc.locV )


From: stephen_ on
Or maybe mapStageToMember?

char_loc = sprite( 1 ).mapStageToMember( _mouse.mouseLoc )
if ilk( char_loc, #point ) then
char_locV = char_loc.locV + sprite( 1 ).member.scrollTop
line_num = sprite( 1 ).member.locVToLinePos( char_locV )
end if