Board Thread:General Discussion/@comment-27029853-20170129150901/@comment-27029853-20170514021013

It is legal AFAIK. I actually saw someone write their initials on theirs in three spots on the Worlds stream.

The issue Wazat is trying to warn you of however is that an opponent can use the position of the writing relative to the slat on the bottom of the maneuver template to deduce the maneuver you played.