// Comment

//Comment

In contrast to a comment after a ; (semicolon), this comment is included in the template for the next round's evaluation.

UNIT 123; One hundred and twenty-three [20,450$]
// Upkeep Mage Tower
@GIVE 234 1000 SILVER
// Learn polearms every now and then
TAX

The // has to be treated like an order, so you can't do:

@GIVE 345 100 SILVER // because of sawmill

Note

There must also be a space after the //.