     catch(3)               MudOS (5 Sep 1994)                catch(3)
     NAME
          catch() - catch an evaluation error
     SYNOPSIS
          mixed catch( mixed expr );
     DESCRIPTION
          Evaluate <expr>. If there is no error, 0 is returned. If
          there is a standard error, a string (with a leading '*')
          will be returned.
          The function throw() can also be used to immediately return
          any value, except 0. catch() is not really a function call,
          but a directive to the compiler.
          The catch() is somewhat costly, and should not be used just
          anywhere.  Rather, use it at places where an error would
          destroy consistency.
     SEE ALSO
          error(3), throw(3), error_handler(4)
     Page 1                                          (printed 3/16/95)
