interface to Xplor-NIH's TCL interpreter

constructor: TCLInterp( TCL_Interp )
  create a TCLInterp object given a pre-existing TCL_Interp pointer.
  If the argument is omitted, the default interp is used.

member functions:

  command(cmd,inVars,outVars) -
     execute the TCL command cmd. 
     inVars is an optional sequence of (name,value) tuples, with name
	the name of a TCL variable and value the value to set it, before cmd
	is executed
     outVars is an optional sequence of TCL variable names to retrieve
        after cmd is executed
     the return value is a dictionary whose keys correspond to the
        names entered in outVars, and whose values have been set by
	the corresponding TCL variables.

    See python/tests/tclTest.py for examples of use.


static functions:

  defaultInterp() - return the default TCL_Interp.