IBM 4400 User Manual
Horizontal Tab Set/Reset
133
Horizontal Tab Set/Reset
ASCII Code ESC D
n1 n2...nk NUL
Hex Code
1B 44
n1 n2...nk 00
Dec Code
27 68
n1 n2...nk 0
Purpose
Sets up to 28 horizontal tab positions.
where:
n1 through n28 specify the character column of the tab positions.
NUL is the sequence terminator.
NUL is the sequence terminator.
Comment
Up to 28 different tab positions may be set. The values must be
listed in ascending order or they are ignored. The physical tab
position is the product of
listed in ascending order or they are ignored. The physical tab
position is the product of
n and the current cell width (1/pitch),
excluding double wide. Tabs in excess of 28 or those positioned
beyond the paper's right margin are also ignored.
beyond the paper's right margin are also ignored.
Tab positions may be cleared by sending the ESC D NUL
sequence. Powering the printer on/off initializes the tabs to every
eighth character column. Horizontal tabs are accessed by
control code HT.
sequence. Powering the printer on/off initializes the tabs to every
eighth character column. Horizontal tabs are accessed by
control code HT.
Example
The following example illustrates horizontal tab setting and
accessing.
accessing.
Horizontal/Vertical Tabs Clear
ASCII Code ESC R
Hex Code
1B 52
Dec Code
27 82
Purpose
Clears all horizontal and vertical tab stops.
Comment
Horizontal tab stops are reinitialized to every 8 columns, starting
at column 1 (i.e., 1, 9, 17 ...).
at column 1 (i.e., 1, 9, 17 ...).