Star Micronics TSP400 Series Programmer's Manual page 129

Removing the X from the High speed icon will move the line in
smaller steps allowing a more accurate positioning.
If there is more than one line drawn, the lines will be numbered. For easier
operation the line being edited turns red (on most monitors).
Pressing the Mbutton will move the controls to the next line.
When ready press .
If you want to remove the line being edited press button.
Y-Lines: change the Line Width, line length and position of the vertical lines
used.
Boxes: Changing boxes is similar to line changes above.
Edit Texts: You can also enter Text Editing by just clicking the mouse on the text
you need to edit.
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