--- a/Makefile	Tue Jan 24 13:23:35 2006 -0500
+++ b/Makefile	Tue Jan 24 13:23:44 2006 -0500
@@ -17,8 +17,15 @@
 
 all: $(basename $(SRCS)) $(PDF_OUTPUT)
 
+validate: cda-validate
+# need to validate html file also.
+
+cda-validate:
+	xmllint --valid --noout cda.xml
+
 cda: $(call targets,cda)
 
+
 # title.xsl: title.xml
 #	xsltproc -o $@ $(NWALSH_XSL_DIR)/template/titlepage.xsl $<
 
@@ -60,3 +67,5 @@
 
 purge: clean
 	rm -rf $(OUTPUT)
+
+.PHONY: clean install purge validate all
\ No newline at end of file