Sorry none of these are bugs
. They just won't appear in the list except at a suitable location. The hacks you are referring to are extremely specific special hacks which you'll need to pay a little closer attention to the dialogue/lore in order to know how to use! (I don't hand out spoilers, but others can help you or you may find the info online elsewhere
--I know they'll be happy to help you out on the Discord if you want to chat, too!)
Note you'll
never have to type in a 4-character code hack manually--relevant ones will always appear in the list if you have them and are at a suitable location.
When I go to a terminal and begin a manual command, I can start it with '\\', but when I try to put an 'M' after it, nothing shows up (same with other letters).
This is because as soon as you type '\\', it enters a different mode for hotkey entry of listed hacks, and you have to then press Escape to turn the mode off and continue typing if you
really want to enter a hack manually. (Again though you'll never have to do this with a 4-letter code, so the only place the approach is applicable is "\\IAMDERELICT," the only non-4-character special hack. And again, with that one you have to use it in the right location. It's
not for Recycling Units. None of the three codes you're referring to in this thread are used on regular machines, only very specific special locations/targets
)
This topic is probably more appropriate for the regular boards, since you're just having a bit trouble figuring out the lore
(read the dialogues a little more closely--they tell you where to use them)