For compatibility to former printers a sequence like CSI 21 ; x ; n { will also be accepted.
In this case, the parameter x will be ignored.

Paper is inserted on receipt of:

CR (hex.0D; dec.13) if CR = LF is selected
LF (hex.0A; dec.10)
VT (hex.0B; dec.11)
print data
Example 10 REM sheet feeder
15 LPRINT CHR$(27);"[3t";:REM set form length
20 LPRINT CHR$(27);"[21{";
30 LPRINT "This text is on a form"
40 LPRINT "from magazine one."
50 LPRINT CHR$(12):REM form feed
60 LPRINT CHR$(27);"[22{";
70 LPRINT "This text is on a form"
80 LPRINT "from magazine two."
90 END
78 Miscellaneous