VT100.net: Digital VT100 User Guide

Table 3-4 Function Key Codes
Key	Octal Value of Code Sent or Received by VT100	Action The Terminal Would Take If Host Sent That Code
RETURN	015	Carriage return function
LINEFEED	012	Line Feed
BACKSPACE	010	Backspace function
TAB	011	Tab function
SPACE BAR	040	Deposit a space on the screen erasing what was there before.
ESC	033	The initial delimiter of an escape sequence – interpret the following character string from the host as a command, rather than displaying it.
DELETE	177	Ignored by the VT100
* The RETURN key can be redefined so that it issues 015₈, 012₈, (carriage return – line feed). The New Line feature in SET-UP mode provides this capability.