IBM 4400 manual Vertical Tab, Set/Clear

Vertical Tab, Set/Clear

Vertical Tab, Set/Clear

ASCII Code ESC B n1 n2 n3...nk NUL

Hex Code 1B 42 n1 n2 n3...nk 00

Dec Code 27 66 n1 n2 n3...nk 0

Purpose Sets vertical tab positions.

where: n1 through nk specify the line number for the vertical tab(s), for a maximum of 16 tab positions. NUL must be used as the sequence terminator.

Comment The physical position on the paper is the product of n and the current line spacing. Subsequent line spacing changes do not change the tab position. If the value of n defines a tab stop that exceeds the forms length, that tab position is ignored.

In Serial Matrix printer protocol, vertical tab positions are set by control code ESC B and executed by control code VT. The tab positions must be in ascending order or the sequence terminates. More information on Serial Matrix vertical tab setting is provided in Chapter 9, “Vertical Page Formatting.”

If the ESC B command is followed immediately by NUL, the vertical tab positions are cleared.

Example The following sample illustrates Vertical Tab Setting.

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