Changes

*[http://lxr.mozilla.org/mozilla/source/calendar/import-export/ import-export/] contains implementations of the [http://lxr.mozilla.org/mozilla/source/calendar/base/public/calIImportExport.idl import and export interfaces].

*[http://lxr.mozilla.org/mozilla/source/calendar/lightning/ lightning/] contains files specific to Lighting.

*[http://lxr.mozilla.org/mozilla/source/calendar/providers/ providers/] See the Providers section of this document.

*[http://lxr.mozilla.org/mozilla/source/calendar/resources/ resources/] is the original front-end directory. Many front-end files live here.