In the user settings there's enablable option for "studyind mode", which is only applicable in the text editing view. This adds a toggle button named "Studying mode" to that view, which, when turned on, imposes some editing restrictions on the writings, and the functionality of the table listing the writings becomes such that one can mark which writings are e.g. recommended to be studied next and which perhaps later. These markings are entirely visual, which means that they don't have exact defination. They can be set by Ctrl-clicking on the writing names.

These to-study markings are saved with the writings in the solution so that they are also stored in the backup of the relavant project and thus, one could prepare something to study for other and give them a copy of the backup file, which they could import to their instance of the publishing application. By turning off the study mode, the text editing view is restored to normal. With study mode enabled, all those markings can be cleared from writings of a writing collection by clicking on "Clear study markings".