User`s manual

7–80 Digital Emulation
Tab Stops
A tab stop is a predetermined point to which the active position moves when
you send the HT and VT tab commands. The active position is where the
next character will print. A page can have a maximum of 32 horizontal tabs,
and a maximum of 67 vertical tabs.
You can set horizontal and vertical tabs. The printer will ignore tab setting
commands for tabs already set. Likewise, the printer will ignore tab clearing
commands for tabs already cleared. The current origin of printing is the
reference point for tabs.