## Virtual Device Driver Reference for OS/2

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### VDHQuerySysValue - Purpose

Context Issues: This function can be called in any context.

DOS Session Terminations: There are no DOS session termination implications for this function.

Notes: Systems values are of two classes, global and per-DOS session. These classes are distinguished by the prefix of the index name. Variables with prefixes of VDHGSV_ are global. Variables with a VDHLSV_ prefix are per-DOS session.