BTB's Enemy Scripting Tutorial

Accoding to this statement:

- for FB 0B and FB 0C, all 4 status bytes are usable, so there's no need to have "???" for 18h to 1Fh values.
- FB 0D is "Set Hide status on self".
- FB 08 isn't used by any monster, but can be summarized as "If desired target(s) found, make own ATB refill REALLY fast".
- for F5 nn 03, the monster(s)' HP is not refilled. the hiding differs from F5 nn 01 in that the monster isn't marked to be removed from the battlefield in this one.
- F5 nn 01 doesn't kill the monster(s), but hides it, and marks it to be removed from the battlefield.
- F5 nn 05 sets Hide and Death on the monster(s).
- for the various F5 00 nn nn commands, "suddenly" is misspelled with a "t" in there.

1) does FB 08 affects speed? also, is it a status or it happens only for that turn?

2) about F5... (with those info)
- F5 00 unhide at max HP;
- F5 01 hide and remove;
- F5 02 unhide at same HP;
- F5 03 hide but not remove;
- F5 04 ....?
- F5 05 hide and death.

Nice to know that, but then what does F5 04 that the others hide commands doesn't do already?