Context: Some software assigned special meanings to ASCII characters sent to the software from the terminal. Operating systems from Digital Equipment Corporation, for example, interpreted DEL as an input character as meaning "remove previously-typed input character", and this interpretation also became common in Unix systems. Most other systems used BS for that meaning and used DEL to mean "remove the character at the cursor".[citation needed] That latter interpretation is the most common now.[citation needed]

Question: What did some software do to the ASCII characters?
Answer: assigned special meanings

Question: What interpretation became common in Unix systmes?
Answer: interpreted DEL as an input character as meaning "remove previously-typed input character"

Question: What do most other systmes use the DEL to mean?
Answer: remove the character at the cursor

Question: What did other systmes us for "remove previously-typed input character"?
Answer: BS

Question: What did some software do to the Digital Equipment Corporation?
Answer: Unanswerable

Question: What interpretation became common in BS systems?
Answer: Unanswerable

Question: What other systems use for the terminal?
Answer: Unanswerable

Question: What did the first systems use DEL to mean?
Answer: Unanswerable