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DCL:GRPH2:UEPACK: 
Tone Fill Routines: Explanation of Subroutines
 
9.2.7 UEITLV
 
- 1.
 - Function
Clears the tone level set by UESTLV or UESTLN.
  
   - 2.
 - Call
  
CALL UEITLV 
  
   - 3.
 - Explanation of Paramters
  
None.
  
   - 4.
 - Notes
  
- (a)
 - This routine must be called when you wish to clear the tone levels 
  previously set by UESTLV or UESTLN and call UETONE.