IntelliTech Intellibar M412, Reference Manual, Page: 145 / 187

9-32 HP PCL Graphics Commands
Gaps - Specifies alternate pen-down and pen-up stretches in the line type pattern; if gaps
are numbered starting with 1, odd numbered gaps are pen-down moves, even numbered
gaps are pen-up moves. The first gap is a pen-down move. Gap values are converted to
percentages of the LT command’s pattern length parameter. A maximum of 20 gaps are
allowed for each user-defined line type.
Screened Vectors (SV)
SV [ screen_type [, shading [, index ]]][ ; ] or SV [ ; ]
screen_type : selects the types of screening as follows
0 - No screening
1 - Shaded fill
2 - HPGL/2 user-defined raster fill (RF command)
21- Pre-defined PCL cross-hatch patterns
22 - PCL user-defined raster fill (RF command)
This command selects the type of screening area (area fill) to be applied to vectors. Options
include lines, hatching patterns (fill types 3 and 4), arcs, circles, edges of polygons,
rectangles, wedges, and PCL user-defined patterns. The SV command does not affect solid
fill types, stroked characters, or edges of characters.
There are four types of screen fill: shaded fill, HPGL/2 user-defined raster fill, pre-defined
PCL cross-hatch patterns, and PCL user-defined patterns.
The SV command defaults to no parameters (no screening or solid fill, which is equivalent
to SV0;). All parameters are optional. If all parameters are omitted, screening is turned off
(the vectors are solid).
Table 9-12 Screened Vector Parameters
Parameter Format Functional Range Default
screen_type clamped integer 0, 1, 2, 21, 22 No screening (solid)
shading clamped integer type dependent type dependent
For type 1 (shaded fill), specify the shading percentage using a number from 0 to 100. For
example, to print vectors that are shaded 15%, specify (SV1,15;).
For type 2, (HPGL/2 user-defined raster fill), specify the index number of the fill pattern
using the RF (raster fill definition) command.