Plat_DownWaitUpStay
From ZDoom Wiki
62:Plat_DownWaitUpStay (tag, speed, delay)
tag: Tag of affected sector speed: Speed of move delay: Tics before going back up
Lowers a platform, waits, and then raises it back to its original position. This is the same as using Plat_DownWaitUpStayLip with a lip of 8. If tag is 0, then the sector on the line's back side is used.

