Bookmarks are stored in Bookmark Collection XML files, which are located in a folder specified in the BookmarkLocation attribute of the settings.lgx General element. BookmarkCollection sets the name of the collection. The information for each collection is stored in a file.
Typically, there is one BookmarkCollection for each user. In this case, the BookmarkCollection attribute should be set to "@Function.Username~".
To help keep consistency, set the settings' General element's BookmarkCollectionDefault attribute with a global value, rather than setting BookmarkCollection in individual elements.