While playing Oblige levels I noticed that in Vavoom the Doom's normal speed doors which require keys or skulls (line types 26, 27, 28) act like the SR door (linetype 63) instead of the DR door (linetype 1).
So if you open those locked doors, they open, wait 5 seconds and close down. But you can't interrup the door by closing it when it is only opening or opened, or re-open the door when it is closing down.