Why not go all the way? Use Start of Header before your require/#include/import/etc. then Start of Text when your code proper starts. Replace ifs with ENQ, then

Why not go all the way? Use Start of Header before your require/#include/import/etc. then Start of Text when your code proper starts. Replace ifs with ENQ, thens with ACK and elses with NAK. You can build an entire language where all the keywords are just ASCII control codes. That will free up all the punctuation for other purposes, and you could name your variables if, for, while, etc.