First off, make sure you are using the editor in its "advnced" mode. Dont be fooled by the name, it makes it no harder, but it does give you more options.
Now place a unit on the map (F1), and then double click it. This brings up the unit propeties. The Initialisation field (or init) is the long line with initialisation written next to it.
...and in this INIT field ya could put the codes that will add some goodies to your unit
Try these :
RemoveAllWeapons This
that would empty the unit's pockets, so to speak. But to add new stuff would take:
This AddMagazine "m16"; this AddMagazine "M16"; This AddWeapon "M16"; This AddWeapon "Binocular"
Now, the guy would have an M16 with two mags, and the gun would be LOADED because you typed the ammo codes before typing the "addWeapon" code!
Just note that each command has a semicolon
; which seperates it from the following code(s)