Autostep

autostep controls the maximum difference in height at which a player will "step" onto a surface without needing to jump. The default value is 5120. Note that autostep applies to view/wall aligned sprites and regular sectors.

If you are making a permanent change to this value, it is best to do it from EVENT_ENTERLEVEL so the game never overwrites your value with the default.

For above water sectors (lotag 1) and floor aligned sprites (cstat 32) (see spritebridge) please see autostep_sbw.