Check this if you want document configuration like for example bookmarks to be saved past editor sessions. The configuration will be restored if the document has not changed when reopened.
Brithwch hyn os hoffech i ffurfweddiad dogfennau, fel tudnodau er enghraifft, gael ei gadw tu hwnt i' r sesiwn golygydd. Adferir y ffurfweddiad os nid yw' r ddogfen wedi' i newid pan ail- agorir.