## Display Device Driver Reference for OS/2

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### DSPINSTL Command Language Interpreter

The DSPINSTL Command Language Interpreter is used in the final phase of the DSPINSTL process. It interprets the contents of DSPINSTL display-driver profile (.DSP) files containing DSPINSTL commands. DSPINSTL commands specify the basic installation and configuration operations to be performed by the utility program. Each DSP file is tagged with a keyword string that identifies the file. To select a DSP file for interpretation, the DSPINSTL Command Language Interpreter traverses the data-element chain.

It is the DSPINSTL commands that do the actual work of display-driver installation and configuration. All the preceding DSPINSTL operations act to properly set up this final phase on a given user's system. In addition to commands that copy files and modify configuration files, there is a special RUN command that runs specified programs during DSP file interpretation. Among other things, such programs can generate DSPINSTL commands that are interpreted immediately by the DSPINSTL Command Language Interpreter. This is the final way that a display-driver developer can customize DSPINSTL execution.