## Virtual Device Driver Reference for OS/2

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### VDHPutSysValue - Purpose

Context Issues: This function can be called in the initialization or DOS session-task (DOS session creation) context.

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

Notes: This service is intended for system virtual device drivers to export system constants, such as ROM memory size. The behavior of the system is undefined if this service is used for any other purpose.