SGX-120L User Manual, rev2.0
Page 6 of 21
http://www.seetron.com/sgxmnl.htm
2002-11-13
Control-A moves the cursor to position 0 (upper left corner) of the display.
Begin Inverse Text ASCII 2 (Control-B)
Control-B begins inverse printing. Any text printed after ctrl-B will be printed in light pixels on a dark
background. Control-C ends inverse printing.
Cancel Inverse Text ASCII 3 (Control-C)
Control-C cancels inverse-text printing begun with ctrl-B.
Ignored ASCII 4 (Control-D)
Control-D is ignored but takes space in the buffer. Use control-@ if you need a time delay.
Ignored ASCII 5 (Control-E)
Control-E is ignored but takes space in the buffer. Use control-@ if you need a time delay.
Ignored ASCII 6 (Control-F)
Control-F is ignored but takes space in the buffer. Use control-@ if you need a time delay.
Ignored ASCII 7 (Control-G)
Control-G is ignored but takes space in the buffer. Use control-@ if you need a time delay.
Backspace ASCII 8 (Control-H, Bksp Key)
Backspace, which may also be sent as control-H, causes the cursor to back up one column and print a
space, leaving the cursor in that column. Note that backspace works in terms of the font size in effect at
the time that it is received. For example, if the large font is in effect, a backspace will erase an area the
size of one large-font character (12 by 16 pixels). When fonts of different sizes are mixed on the screen,
backspace should be used with caution, since a large backspace would erase several smaller characters.
Horizontal Tab ASCII 9 (Control-I, Tab Key)
Tab, which may also be sent as control-I, causes the cursor to jump to the next multiple-of-four column
position without otherwise affecting the display. For example, if the cursor is at position 0, sending TAB
moves it to position 4. Tabs wrap to the next line, or from the last line back to the first line. When a narrow
(6-pixel) font is in effect, there are 5 tab stops per line; with a wide (12-pixel) font there are 3 tab stops per
line.
Smart Linefeed ASCII 10 (Control-J)
Control-J causes the cursor to drop down to the same column of the next display line. If the cursor is on
the last line, it will wrap to the first line. The linefeed function is
smart
because it ignores redundant
linefeeds sent immediately after a carriage return. When a short (8-pixel) font is in effect, the display is 4
lines high; with a tall (16-pixel) font, there are 2 lines.
Vertical Tab ASCII 11 (Control-K)
Control-K causes the cursor to move up to the same column of the preceding display line. If the cursor is
on the first line, it will wrap to the last line. When a short (8-pixel) font is in effect, the display is 4 lines
high; with a tall (16-pixel) font, there are 2 lines.
Clear Screen ASCII 12 (Control-L)
Control-L clears the entire screen and moves the cursor to position 0 (upper left corner) of the display.
Return ASCII 13 (Control-M, Return Key)
Return, which may also be sent as control-M, sends the cursor to the first column of the next line of the
Home Cursor ASCII 1 (Control-A)
