Vertical Tab (Esc Vt); Form Feed (Esc Ff); Carriage Return (Esc Cr); Shift Out (Esc So) / Double-Wide Print - IBM 4247 A00 User Manual

If skip perforation mode is active and the bottom margin is crossed, the vertical
position on the new page following the automatic form feed will be the top-of-form
position. If skip perforation is not active, the vertical position on the new page is the
point immediately following the previous print line.

Vertical Tab (ESC VT)

This control causes the vertical presentation position to be advanced to the next
vertical tab stop. The horizontal position is not affected unless automatic carriage
return mode is activated from the operator panel Configuration menu. If there are
no tab stops past the current vertical presentation position, Vertical Tab is treated as
a Line Feed.

Form Feed (ESC FF)

This control causes a new page to be started. Form Feed is a line end and page
end control; it causes all deferred printing that may have been buffered for the
current page to be completed and the form physically advanced to eject the current
page. The vertical presentation position advances to the top margin and the
horizontal presentation position is set to the left margin for subsequent printing.

Carriage Return (ESC CR)

This control moves the current horizontal print position to the left margin. The
vertical print position does not change unless automatic line feed mode is active.

Shift Out (ESC SO) / Double-Wide Print

This control causes the printer to start double-width printing. Double-width printing
prints the characters twice as wide as the current character spacing. This results in
half as many characters per inch. Each character takes up the space of two
single-width characters. A Carriage Return, Line Feed, Form Feed, Vertical Tab,
Double-Wide Continuous Mode, Cancel Double-Wide Print, or Set Presentation
Position with vertical movement specified cancels the Shift Out control code.

Shift In (ESC SI) / Condensed Print

This control prints graphic characters in condensed pitch (15, 17.1, or 20 CPI). If
the current print option is 10 CPI this control will condense printing to 17.1 CPI. If
the current print option is 12 CPI this control will condense printing to 20 CPI. If the
current print option is 15 CPI there is no change in density. This control changes
the maximum number of characters that can be printed on one line. Shift In is a
buffer terminating control; if printable data at a different character-per-inch setting is
buffered, that data is printed before the setting is changed. The current presentation
position becomes the next printable column at the new character-per-inch setting.
CPI can be changed within a print line.
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4247 Printer Model A00 User's Guide
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