==== MFSH_SEGFREE - Freea segment ====

**Purpose**

Free a memory segment.   

**Calling Sequence**

<code c>
int far pascal MFSH_SEGFREE(usSel)

unsigned short usSel;
</code>

**Where**

//usSel// contains the selector of the segment to be freed. 

**Returns**

If no error is detected, a zero error error code is returned. If an error is detected, the following error code is returned:   

  * ERROR_PROTECTION_VIOLATION -- the selector is invalid. 

**Remarks**

This function releases a segment previously allocated with //MFSH_SEGALLOC//, or loaded as part of the mini-FSD image.