VT100.net: Digital VT102 User Guide

Table 5-7 Permanently Selected Modes
Name	Mnemonic	Selection	Function
Control representation	CRM	Reset	Terminal performs control functions with displaying a character to represent control function received.
Editing boundary	EBM	Reset	Characters moved outside the margins are lost; terminal does not perform erasing and cursor positioning functions outside the margins. This does not affect horizontal and vertical position (HVP) and cursor position (CUP) sequences.
Erasure	ERM	Set	All characters displayed can be erased.
Format effector action	FEAM	Reset	Terminal immediately performs control functions that affect the screen display.
Format effector tranfer	FETM	N/A	-
Guarded area transfer	GATM	N/A	-
Horizontal editing	HEM	N/A	-
Multiple area transfer	MATM	N/A	-
Positioning unit	PUM	Reset	Terminal specifies horizontal and vertical positioning parameters in control functions in units of characters position.
Selected area transfer	SATM	N/A	-
Status reporting transfer	SRTM	Reset	Terminal transmits status reports by using device status report (DSR) sequence.
Tabulation stop	TSM	Reset	Tab stop selections apply to corresponding screen columns for all lines.
Transfer termination	TTM	N/A	-
Vertical editing	VEM	N/A	-