1 RCV
 Task to recover a file locked as a result of task abortion

 calling sequence
  
 MCR>RCV Filename[/SWitch]
  
  The normal REC[over] command  will only unlock a file that  was locked
 due to abnornal termination.  After use, some files may end up 0 length
 due to the end of file indicators not being properly reset.
  
 RCV will unlock the file (if locked,) unless another task has write ac-
 cess. It will then scan the file and rewrite file attributes to reflect
 the actual size of the file (rather than 0).
  
 RCV has two legal switches:
 	/LA:NNN		Set number of records to be NNN
 	/AD:NNN		Change number of records by NNN (+/-)
  
 			NNN must be a legal single-precision decimal
 			number (between -32767 and 32767)
  
 For fixed length record files, this switch lets one override the result
 of the recovery and explicitly determine the number of records.
