Sort of a repost here, but I just realized they aren't posted yet at this incarnation of the board, and they just got converted to GM6.
http://noproblo.dayjo.org/misc/GM6Transitions.zipThe first is the "Triforce" transition seen in Four Swords where a triangle circles down on the player when you change areas. No photos available.
The second is a standard "Wipe" transition with a few options.
These are both real-time effects and do not freeze the game. Instructions for using and controling the speed, directions, and colours, are in the Game Information text.