IBM 4400 manual Executing Vertical Tabs, Vertical Tab Positions

Executing Vertical Tabs

Executing Vertical Tabs

The vertical tab execute code is VT. When sent, it prints the contents of the print buffer (if data is in the buffer) and causes paper position movement to the next predefined vertical tab position. If a tab position is not defined, the paper position is moved to the next line at the current line spacing. If a tab position is at the current line, the paper position is moved to the next tab position. If no tab positions are defined between the current line and the end of the form, the paper position moves to the next TOF.

Vertical Tab Positions

Vertical tab positions are set by line number. A maximum of 16 vertical tab positions can be set per channel of the form. If the single channel format is used, a maximum of 16 vertical tabs can be set for the form. A sample single channel format is shown in Figure 37. The first vertical tab is set at line 6 for part number data, a second tab is set at line 8 for part name data, and a third tab is set at line 14 for quantity data. Since this is a single channel format (or channel 0), the ESC B code can be used to assign the vertical tabs to the lines of the form. Once the tab positions are set, sending the vertical tab execute code (VT) causes the paper position (currently at the top-of-form position) to advance to the first tab position for PART NUMBER data. Sending another VT moves the paper position to the second tab position for the PART NAME, followed by a third VT to access the third tab position for the QUANTITY data.

Form Data	Form Line	Vertical Tabs
	Number
	1	Top of Form
	2
	3
	4
	5
Part Number	6	Tab 1
Part Name	7
	8	Tab 2
	9
	10
	11
	12
Quantity	13
	14	Tab 3
	15
	16
	17
	18
	19
	20

Figure 37. Sample Serial Matrix Vertical Tab Positions

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