- STRUCTURE
 
- SYNOPSIS
 
Checks to see if a given name has been hidden.
 
- LIBRARY
 
Parse
 
- DESCRIPTION
 
A call hidden c where c is the name of a constant, will
check to see if the given name had been hidden by a previous call
to Parse.hide.
 
- FAILURE
 
Never fails.
 
- COMMENTS
 
The hiding of a constant only affects the quotation parser; the constant is
still there in a theory.
 
- SEEALSO