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─────Run-Time Library───────────────────────────────────────────────────────
 
     The _vfree function deallocates a virtual memory block. The
     argument <handle> points to a virtual memory block previously
     allocated through a call to _vmalloc or _vrealloc. The number of
     bytes freed is the number of bytes specified when the block was
     allocated (or reallocated, in the case of _vrealloc).
 
     The block must be unlocked before it is freed; use _vlockcnt to
     ensure that the block is unlocked. After the call, the freed block
     is available for reuse by the virtual heap.
 
     Return Value
 
     None.
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