catch man page on IRIX

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     catch(n)			    Tcl			      catch(n)

     _________________________________________________________________

     NAME
	  catch - Evaluate script and trap exceptional returns

     SYNOPSIS
	  catch script ?varName?
     _________________________________________________________________

     DESCRIPTION
	  The catch command may be used to prevent errors from
	  aborting command interpretation.  Catch calls the Tcl
	  interpreter recursively to execute script, and always
	  returns a TCL_OK code, regardless of any errors that might
	  occur while executing script.	 The return value from catch
	  is a decimal string giving the code returned by the Tcl
	  interpreter after executing script.  This will be 0 (TCL_OK)
	  if there were no errors in script; otherwise it will have a
	  non-zero value corresponding to one of the exceptional
	  return codes (see tcl.h for the definitions of code values).
	  If the varName argument is given, then it gives the name of
	  a variable; catch will set the variable to the string
	  returned from script (either a result or an error message).

	  Note that catch catches all exceptions, including those
	  generated by break and continue as well as errors.

     KEYWORDS
	  catch, error

     Page 1					     (printed 2/19/99)

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