Index: /issm/trunk-jpl/test/NightlyRun/python_test_guidelines.txt
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--- /issm/trunk-jpl/test/NightlyRun/python_test_guidelines.txt	(revision 13659)
+++ /issm/trunk-jpl/test/NightlyRun/python_test_guidelines.txt	(revision 13660)
@@ -5,5 +5,5 @@
 - Make indentation consistent in appearance as well as content (e.g., don't mix tabs and equivalent number of spaces).
 - Separate statements on separate lines are more general.
-- Be careful with vectors vs. column arrays (unfortunately Matlab does not distinguish).
+- Be careful with vectors vs. column arrays (unfortunately Matlab does not distinguish).  Documentation (like in the class def) showing whether more than one column is possible is very helpful.
 - Be careful with variable names that might be reserved words in other languages (e.g. "list").
 - Weird shortcuts for a particular language are not very general.