Epson PowerLite 4100 Operator's Manual page 314

294 DEC LA210 Control Commands
Control codes sent while the printer is in graphics mode are processed or
ignored as follows:
Processed without
exiting
graphics mode
NUL
ENQ
DEL
SO
The printer remains in graphics mode until:
The power is turned off.
A valid C1 control code (decimal range 128 and 159) is received.
A control command is received.
A string terminator (ST or ESC \) is received.
The control code CAN is received.
When one of these events occurs, all pending graphic data are printed
out, the printer exits graphics mode, and the command is executed as
normal.
Ignored
EOT BS
BEL LF
SI CR
FF
HT
VT