Create stockComments.md

docs/GeneralTests/stockComments.md

@@ -0,0 +1,17 @@
+# The pathway contains stock comments
+
+The pathway GPML contains one or more of the following comments:
+
+```xml
+<Comment>Type your comment here</Comment>
+```
+
+## Why does this fail show up?
+
+The PathVisio user interface makes it easy to add a new comment element and it is not
+always easy to detect. It shows up as comment on the website, however.
+
+## Curation action
+
+Finding the comment is not trivial to find in PathVisio. Experts may actually edit the
+GPML in a XML-aware text editor instead.