Practically everything, from opening a play to editing/authoring them.
What does not
What was not tested
The extras that came bundled with the CD, i.e. the Director's Guide and tutorials (although they aren't that essential; some of the info in that guide may be available in the American Girl Wikia site).
Well, it does run flawlessly on most distros, but I had to post another test data for a newer distro for the sake of completeness.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Show||Ubuntu 14.10 "Utopic" amd64 (+ variants like Kubuntu)||Dec 12 2014||1.7.32||Yes||Yes||Silver||Blake Gripling|
|Current||Ubuntu 11.04 "Natty" i386 (+ variants like Kubuntu)||Aug 29 2011||1.3.22||Yes||Yes||Platinum||Blake Gripling|
|Show||Linux Mint 8 "Helena"||Apr 16 2011||1.2.3||Yes||Yes||Platinum||Blake Gripling|