Microsoft KB Archive/22722

Value Fields of Printer Driver PCSDs

PSS ID Number: Q22722 Article last modified on 11-02-1994

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MS-DOS

Question:

What is the function of the “value” field in the PCSDs of the PRDs?

Response:

The “value” field gives an upper limit to the parameter Word can issue to the printer for the associated control sequence. Usually this is required because of the printer, and the limit is referenced in the printer documentation. For example, a printer manual may say that line spacing may be specified in multiples of 1/144 inch up to 127/144 inch. Byte:18 (set line spacing) in the PRD would then have value:127, since 127 is the largest parameter that the printer can handle for line spacing. When Word sees value:127, Word will not send out a parameter for the “set line spacing” sequence that is greater than 127.

(Technically, “value:127” for this example assumes that Word will be expressing the parameter in 1/144&quot;; i.e., the dyaMin is 10.)

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