DORM is a shitty new alphabet I made in 2 hours somehow
Something
It stands for DOOM README.
Long story short: bean
Every letter is replaced by .X, X being the position of the letter in ATLAS.TXT, well, that's how it's supposed to be, and the dot is to make the decoder be able to tell what is a letter.
For example, H is .1, E is .2, and I is .6