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 SemClose()
------------------------------------------------------------------------------
 Purpose:
 Close a semaphore.

 Syntax:
 bResult = SemClose( dwSemID )

 Parameters:
 dwSemID The semaphore ID number.

 Returns:
 A boolean value (TRUE or FALSE).

 The CA-Clipper name for this function is:
 SemClose()

 Description:
 SemClose() returns TRUE if the semaphore specified by ID number dwSemID
 is closed successfully.

 Returns FALSE if an error occurs.

 Example:
 // To open and close a semaphore called "UPDATE_SEM":
 dwSemID = SemOpen( "UPDATE_SEM", 1 )
 if ( NWErrorGet() = 0 )
    ....   // Perform function
    if ( SemClose( dwSemID ) )
       ? "Semaphore closed successfully"
    endif
 endif

 Notes:
 All semaphores opened by a program are automatically closed when
 the program terminates.

 Note for CA-Clipper:
 IMPORTANT - both positive and negative values are valid semaphore handles,
 except the value NOVERRLONG. Valid semaphore handles can be in the range
 -2147483647 to +2147483647.