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+#!/bin/sh
+# Script to coordinate parsing of S. Chamberlain source-embedded 
+# documentation markup language.
+
+# Four passes:
+#	1) awk discards lines not intended for docn, and marks blocks of
+#	   text with comments identifying source file;
+#	2) first sed pass interprets Chamberlain markup;
+#	3) second sed pass does cleanup that involves merging lines
+#	4) third sed pass does remaining cleans up---making {}
+#	   printable within examples, and eliminating empty index entries and
+#          headings.
+#Third and second sed passes are separate because order of execution is hard
+#to control otherwise, making one or another of the things involving @example
+#inoperative.
+
+base=`echo $1 | cut -d '.' -f 1`
+
+awk -f awkscan $1 | \
+sed -f sedscript | \
+sed -f exmerge  | \
+sed -f exfilter  >$base.texi
+