I could really use a #PAD(<character>, <X times>) command that takes a character (or string maybe?) and pads the current line with that character X times. Or maybe #LINE(LineLength) and then a #PAD(character) like this:
//line contains 10 character
#LINE(10)
Rawr.
//write 5 more spaces before continuing
#PAD( )
//linebreak
<line>
The few Genesis games I've looked at haven't included linebreaks, so you usually have to pad the line out with spaces to achieve the same affect. That's the one feature Atlas could really use, imo.