Is it possible to hide any of these fields by script on record load? and also rename? I can't do it from a workflow or form editor (unless I'm missing something).

Pretty sure they are on the form

ok. I think I've gone through every subtab on the form editor. I'll check again. Thanks

screen fields > total box

Interesting. I see it on Purchase Orders, but not Blanket Purchase Orders. Weird quirk of BPOs I guess. Back to seeing if I can do this programatically.