Common /hidecorpse commands
/hidecorpse all: Hides all corpses, both player and NPC, after you loot them.
/hidecorpse allbutgroup: Hides all corpses except for those of your group members.
/hidecorpse looted: Makes a corpse disappear after you loot it, even if items are left on it.
/hidecorpse NPC: Hides all NPC corpses but shows player corpses.
/hidecorpse none: (or /hidecorpse off): Turns off all corpse hiding.
And randomness that I use when I forget how to do something I know I can do. Its not all encompassing, but its always a good place to start:
https://everquest.allakhazam.com/wiki/eq:commands