ANSI X3.64 Emulation
Horizontal Tabs
Default horizontal tab stops are set at every eighth column, i.e. column 8, 16, 24, 32, 40, etc. The default tab stops are associated with columns, not absolute physical positions. Changing character spacing will change the physical position of the default tab stops.
User defined horizontal tab stops are associated with absolute physical positions, not with columns. The tab stops are set relative to the current character spacing, but subsequent changes in character spacing will not affect the physical position of the tab stops (except that the position will be rounded up to the closest character boundary).
Horizontal Tab | HT |
Advances to the next horizontal tab stop. If no tab stop exists between the active column and the right margin, the HT will be ignored. Default tab stops are set at every eighth column, i.e. column 8, 16, 24, 32, 40, etc. Different tab stops may be set with ESC D.
Control code: | HT |
Hexadecimal: | 09 |
Absolute Horizontal Tab | ESC $ n1 n2 |
Move to the specified carriage position. The position is specified in 60ths of an inch, and calculated as
inches. The position is relative to the left margin and must not exceed the right margin or it
will be ignored.
Example: The following escape sequence will set the carriage position 5 inches (300/60 inches) from the left margin.
Escape Sequence: | ESC | $ | 44 | 1 |
Hexadecimal: | 1B | 24 | 2C | 01 |
Relative Horizontal Tab |
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| ESC \ n1 n2 |
Move the carriage position to the left or right of the current carriage position. The displacement is specified in
120ths of an inch, and calculated as
inches. The new position is relative to the current
carriage position, and must fall within the left and right margins or it will be ignored. A negative displacement (2’s complement) causes a move to the left.
Example: The following escape sequence will move the carriage one inch to the right.
Escape Sequence: | ESC | \ | 120 | 0 |
Hexadecimal: | 1B | 5C | 78 | 00 |
Example: The following escape sequence will move the carriage one inch to the left.
Escape Sequence: | ESC | \ | 136 | 255 |
Hexadecimal: | 1B | 5C | 88 | FF |
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