User`s manual

7–81Digital Emulation
Set Horizontal Tab Stops (DECSHTS)
ASCII Code ESC [ Pn ; ... ; Pn u
Hex Code 1B 5B Pn 3B ... 3B Pn 75
Dec Code 27 91 Pn 59 ... 59 Pn 117
Purpose Pn denotes a horizontal tab stop location.
Discussion DECSHTS allows you to select up to 16 horizontal tab stops at one time.
Thirty–two possible horizontal tab stops are available, however, any
sequence beyond 16 is ignored. The Pn values can be in any order in the
escape sequence.
The unit of measurement can be character cells, decipoints, or pixels. It is
selected by using the Position Unit Mode (PUM) and Select Size Unit (SSU)
sequences. If you select character cells, the width of each cell equals the
current character width setting. Character width is determined by setting the
horizontal spacing.
When you assign a new tab stop value, each new tab stop value is inserted
into the current tab stop list, starting after the old tab stop with the next lower
value. If you assign more than the maximum of 16 new tab settings, the
printer discards the old tab stop with the highest value before entering each
additional new tab stop. If the new tab stop has the highest value and you
have set the maximum allowed number of tab stops, the printer ignores the
new tab stop.
If a tab stop is not on the boundary of a character cell, tabbing to that tab stop
in print mode forces the printer to the nearest character position.