Whoops, invalid code
Make a proper null connection for testing, don't just set mdb = NULL
Can't do this, since it causes us to evaluate expr
Test what happens whith an invalid case study
Rework connection guessing, add more notes on what to do under windows
Use DB to find out case study ID---might be a remote DB
Give correct links
R CMD check fixes
When grouping by vectors with taxonomies, should use these to lookup values