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diff --git a/sys/clio/clgwrd.x b/sys/clio/clgwrd.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+
+# CLGWRD -- Get a keyword parameter from the CL, and match it against
+# a dictionary of legal keywords.  Any unambiguous abbreviation is
+# accepted.  The full keyword string is returned in keyword, and the
+# word index of the keyword in the dictionary is returned as the function
+# value.
+
+int procedure clgwrd (param, keyword, maxchar, dictionary)
+
+char	param[ARB]		# CL parameter string
+char	keyword[ARB]		# String matched in dictionary
+int	maxchar			# Maximum size of str
+char	dictionary[ARB]		# Dictionary string
+
+pointer	sp, abbrev
+int	kwindex, strdic()
+
+begin
+	call smark (sp)
+	call salloc (abbrev, SZ_FNAME, TY_CHAR)
+
+	call clgstr (param, Memc[abbrev], maxchar)
+	kwindex = strdic (Memc[abbrev], keyword, maxchar, dictionary)
+
+	if (kwindex <= 0)
+	    call syserrs (SYS_CLGWRD, Memc[abbrev])
+
+        call sfree (sp)
+        return (kwindex)
+end