Brother HL- SERIES, Техническое справочное руководство, Страница: 321 / 392

Revision C 16/01/96
Chapter 8 "HP-GL2" 55
DV - Define Variable Text Path
DV [ path [,line]] [;]
path : text printing path - horizontal or vertical, and left to right, right to left, upwards or downwards.
line: the effect of a line feed.
Ÿ
This command determines the printing direction for labels and the carriage return point.
Ÿ
Permissible values of path are 0, 1, 2 and 3. If path = 0 labels are printed horizontally and left to
right - normal printing. If path = 1 labels are printed vertically downwards - characters appear in a
vertical column. If path = 2 labels are printed horizontally and right to left - words appear
backwards. If path = 3 labels are printed vertically upwards - characters appear in a vertical column,
reading from bottom to top.
Ÿ
The value of line must be either 0 or 1. If line = 0, each time a line feed is encountered the current
pen position is moved at an angle of 90° to the path in a clockwise direction. Hence, if path = 1 the
second line of text is printed to the left of the first line. If line = 1 each time a line feed is
encountered the current pen position is moved at an angle of 90° to the path in an anticlockwise
direction. Hence, if path = 2 the second line of text is printed below the first line.
Ÿ
If you do not use a DV command the default text path is horizontal, left to right: line feeds will
move the pen position at 90° to the text clockwise. This is equivalent to using the command DV0,0;
Ÿ
If you omit both parameters the text path is horizontal, left to right.