Autostep sbw
autostep_sbw controls the maximum difference in height at which a player will "step" onto an above water sector (lotag 1) or floor aligned sprite (cstat 32) (see spritebridge) without needing to jump. The default value is 1024.
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 normal sectors and view/wall aligned sprites please see autostep.