NAME:
	nobname
 PURPOSE: (one line)
	Replace all blanks in a string with an underscore character.
 DESCRIPTION:
 CATEGORY:
  Utility
 CALLING SEQUENCE:
	outstr = nobname(instr)
 INPUTS:
	instr - Input string to massage.
 OPTIONAL INPUT PARAMETERS:
 KEYWORD PARAMETERS:
 OUTPUTS:
	Return is the input string with blank converted to underscore.
 COMMON BLOCKS:
 SIDE EFFECTS:
 RESTRICTIONS:
 PROCEDURE:
 MODIFICATION HISTORY:
	Written by Marc W. Buie, Lowell Observatory, 1991 Feb 26.