DosFreeResource frees a resource that was loaded by DosGetResource.

After the last reference to a resource is freed, the memory becomes available for reuse by the system; however, the memory is not reused until the system determines that it cannot satisfy a memory allocation request. This allows the resource to remain in memory in case the process issues DosGetResource again. The system thus avoids having to read the contents of the resource from the disk again.


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