Xerox Printer manual Host Forms Description Language

HOST FORMS DESCRIPTION LANGUAGE

pixel Acronym for picture element. Smallest addressable point of a bitmapped screen that can be independently assigned color and intensity. Pixels are definable locations on a display used to form images. For graphics displays, more pixels generally provide higher resolution. Spots, dots, and pixels are used interchangeably.

point Unit of measurement equal to 0.0139 inch. Points are always used to express type, size, and leading. There are 12 points to a pica and about 72 points to an inch. See also pica.

point size Height of character set from the top of its ascender to the bottom of its descenders in units (points). Point size does not always include leading.

portrait Orientation of print lines or the top of an illustration parallel to the short edge of the paper. See also orientation.

PDL Print description language. Language used to describe printing jobs to an LPS. PDL describes the input (type, format, and characteristics), performs the processing functions (logical processing), and describes the output (type format, font selection, and accounting options).

printer Output device that produces hardcopy printouts.

printout Informal expression referring to almost anything printed by a computer peripheral device.

process 1. To perform a systematic sequence of operations, such as add, edit, or delete. 2. To produce a specific result by manipulating data.

processor Applies to any system that is capable of receiving and performing operations upon data and supplying the results to those operations.

program Complete set of instructions in a language compatible with the device to be used. A program directs a system to perform each operation at the right time in the proper sequence.

programmer Person involved in designing, writing, and testing computer programs.

prompt Message or symbol displayed on a system console requiring the operator to take action.

proportional font Font containing characters that vary in width.

proportional spacing Text in which each alphanumeric character is given a weighted amount of space is proportionally spaced. Such output has print±like appearance. Proportional spacing allows more space for wide characters and less space for narrow characters.

proportional type Characters that vary in width.

purge To delete data from a system.

query Request for data or other information entered by an operator while the system is processing.

queue List of documents waiting to be processed.

real time To process transactions as they are entered into a system. User and system interchange allow transactions to be processed and the results returned to the user.

record Collection of data or words treated as a unit.

GLOSSARY±10 HOST FORMS DESCRIPTION LANGUAGE 3.2 FOR IBM MVS CREATING FORMS