add comment about why not to use fragment_fromstring..

encthenet_plugins.py

@@ -12,6 +12,11 @@ def rellinktoabs(context, value):
 	rel_path = context['resource'].relative_path
 	content_url = env.globals['content_url'](context, rel_path)
 
+	# Note that this could be parsed w/ fragment_fromstring
+	# (https://lxml.de/3.1/api/private/lxml.html-module.html#fragment_fromstring)
+	# But is would require using create_parent, and stripping that
+	# instead, or fragments_fromstring, but iterating over those
+	# to strings.  Not one is a solution to the problem.
 	html = etree.HTML(value)
 
 	# get all the fragment urls