Sonic Robo Blast II - Specials Reference Document said:The player who triggered the linedef executor will be teleported to the tagged sector. The player's exact X, Y, Z, and angle are determined by a teleport destination thing, type 5003, somewhere in the tagged sector.
If the ML_BLOCKMONSTERS flag is used, it won't flash and make the teleport sound effects. If the ML_BLOCKSOUND flag is used, it won't reset the angle to the angle of the teleport destination thing, and if the ML_PASSUSE (512) flag is used, it will not kill your acceleration/speed upon teleport.
What are the BLOCKSOUND and PASSUSE flags?