printhead resolution. The number of pels that can be
printed in an inch, both horizontally and vertically.
program temporary fix (PTF). A temporary solution or
bypass of a problem diagnosed by IBM as resulting
from a defect in a current unaltered release of the
program.
programming request for price quotation (PRPQ). A
customer request for a price quotation on alterations or
additions to the functional capabilities of system control
programming or licensed programs. The RPQ may be
used in conjunction with computing system RPQs to
solve unique data processing problems.
proportionally spaced font. A typographic font, or in
some usages a mixed-pitch font. See typographic font
and mixed-pitch font.
PSF. See Print Services Facility.
PSF Direct. A function of PSF for OS/2 of PSF for AIX
that enables another PSF program (PSF for OS/390,
PSF/VM, PSF/VSE, or PSF for AS/400), using the
LU6.2 SNA protocol, to print remotely on PSF for OS/2
or PSF for AIX printers. The PSF program sends the
print data stream directly to the PSF for OS/2 or PSF
for AIX printer, bypassing the OS/2 or RISC/6000 spool.
The operator of the originating system controls printing
on the PSF for OS/2 or PSF for AIX printers, as though
the printers were attached to the originating system.
PTF. Program temporary fix.
PTOCA. See Presentation Text Object Content
Architecture.
R
raster font. A font technology in which the graphic
characters are defined directly by the raster bit map.
Contrast with outline font..
raster pattern. A pattern of bits with 0 (off) and 1 (on)
that define the pels in an image. A 1-bit is a toned pel.
raster pattern overlay. An overlay loaded in the
printer as a raster pattern rather than as a sequence of
printer commands. Contrast with coded overlay.
raster pattern storage (RPS). An area of storage that
holds raster patterns for fonts and images.
repositioning. A process in which Print Services
Facility, following an indication from the printer or from
JES of a potentially recoverable error, locates the
correct spool record for recomposing one or more
pages for printing.
request for price quotation (RPQ). A customer
request for a price quotation on alterations or additions
to the functional capabilities of a computing system,
hardware product, or device. The RPQ may be used in
conjunction with programming RPQs to solve unique
data processing problems.
resident fully described fonts. Fonts stored in a
printer but that have most of the attributes that can be
specified for host fonts.
resident symbol sets. A type of font stored in a
printer that has fewer attributes than can be specified
for fully described fonts.
resolution. (1) In computer graphics, a measure of the
sharpness of an image, expressed as the number of
lines and columns on the display screen. (2) The
number of pels per unit of linear measure.
resource. (1) A collection of printing instructions used
by Print Services Facility in addition to the print data
set, to produce the printed output. PSF resources
include coded fonts, font character sets, code pages,
page segments, overlays, form definitions, and page
definitions. (2) Any source of aid used for performing a
task, for example disk storage space, computer
processing time, and communications lines.
rotation. Synonym for character rotation. See also
orientation.
routine. A program or sequence of instructions called
by a program that may have some general or frequent
use. (I) (A)
RPQ. See request for price quotation.
rule. A solid or patterned line of any weight, extending
horizontally or vertically across a column, row, or page.
S
SCS. See SNA Character String.
SDLC. Synchronous Data Link Control.
security label. In a trusted computing base, a security
label used to maintain multiple levels of security on a
system. This label is a combination of a security class
and a security level.
sense data. (1) Data describing an I/O error. Sense
data is presented to a host system in response to a
Sense I/O command. (2) In SNA, the data sent with a
negative response indicating the reason for the
response.
sequential data set. In MVS, a data set whose
records are organized on the basis of their physical
positions, such as on magnetic tape. Contrast with
partitioned data set.
sheet. A division of the physical medium on which
data is presented. The IPDS architecture defines four
types of sheets: cut-sheet forms, continuous forms,
204 Printer Information
