Changes by: Alexei Kopylov (kopylov at cs.caltech.edu)
Date: 2005-03-10 16:19:55 -0800 (Thu, 10 Mar 2005)
Revision: 6885
Log message:

      1. Added the operator make_depth{'s;'n}, that adds some variables to the term $s$ to make its binding depth to be equal to $n$.
          I can't think of the better name.
         I changed definition of add_vars_upto{'s;'t}. Xin, could you fix the proofs?
      
      2. Added some operators in lambda_example.
      

Changes	Path
+9 -0	metaprl/theories/itt/itt_reflection_example_lambda.ml
+19 -3	metaprl/theories/itt/itt_synt_subst.ml
+7 -0	metaprl/theories/itt/itt_synt_subst.mli