From: anton.txt@gmail.moc   
      
   R.Wieser to Anton Shepelev:   
      
   > >   @ECHO OFF   
   > >   SETLOCAL   
   > >   SET VAL=1   
   > >   SET REF=VAL   
   > >   ENDLOCAL & CALL ECHO REF points to: [%%%REF%%%]   
   > >   
   > > Why can't REF be expanded on the last line as in the   
   > > first example?   
   >   
   > Because the "call echo" is used to perform a delayed   
   > expansion.  After the "call" is evaluated, the line   
   > becomes:   
   >   
   > ENDLOCAL & ECHO REF points to: [%VAL%]   
      
   I think the acutual sequece is a tad different.  First,   
   percent expantion turns the original line into:   
      
   ENDLOCAL & CALL ECHO REF points to: [%VAL%]   
      
   Then ENDLOCAL is executed and the local value of VAL is   
   lost.  And finally, %VAL% is evaluated as an empty string.   
      
   > But after ENDLOCAL is executed, VAL is no longer defined.   
   > If you define VAL outside the SETLOCAL, you get this   
   > value:   
      
   Yes, I have observed this in my experiments.  Thanks you.   
      
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