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B
Vertical Page Formatting
Overview
Rapid vertical paper movement is called slewing. You can enable the printer
to slew paper to preset locations on a page by loading the vertical tab table.
The vertical tab table is a set of programmed vertical tabs. Various lines of the
form are assigned vertical tabs, which are then accessed by control codes for
rapid paper advancement to the tab position.
Two control codes are used for vertical tabbing: ESC B sets single channel
vertical tabs, and VT executes a vertical tab. These codes are described in
Chapter 3. The Epson emulation also has ESC / to select one of eight tab
channels and ESC b to set the tabs in a particular channel.
Executing Vertical Tabs
The vertical tab execute code is VT (hex 0B). It prints the contents of the print
buffer (if data are in the buffer) and causes paper movement to the next
predefined vertical tab position. If a tab position is not defined, the paper is
moved to the next line at the current line spacing. If a tab position is at the
current line, the paper 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 moves to
the next TOF.
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