Epson PLQ-20 Reference Manual page 78

Compress printing mode
Starts the compress printing mode. See "Compress Printing
Mode" on page 79 for more information.
Data dump
Starts the data dump mode, in which all input data is printed as
hexadecimal numbers and corresponding characters. See
"Printing Hex Dump" on page 103 for more information.
Paper removing
Starts the paper removing mode. See "Clearing Paper Jams" on
page 119 for instruction on feeding paper.
Bidirectional adjustment
Starts the bidirectional adjustment mode. See "Aligning Vertical
Lines in Your Printout" on page 96 for more information.
Top-of-form adjustment
Starts the top-of-form position adjustment mode. See"Adjusting
the top-of-form position" on page 31 for more information.
Printing start position adjustment
Starts the printing start position adjustment mode. See"Adjusting
the printing start position" on page 33 for more information.
Chapter 5 Control Panel 78