I am sorry for that very vague title, but my concern is the following, say that I have three markdown files named Lec1, Lec2 and Lec3. Lec1 and Lec2 are my final notes and Lec3 I am still editing. So, I would want to see Lec1 and Lec2 in preview mode always that is the markdown preview. and Lec3 which I am editing, in edit mode.
Currently, if I change Lec3 from edit mode to preview mode all of them got the preview mode that is all the files are in the same mode. Is there a way to tell obsidian to lock preview mode for Lec1 until I change it to edit mode?
There is now a force view mode plugin which allows setting the mode via frontmatter. But this is cumbersome. I still think it would be best if, as suggested, Obsidian would remember the view mode (preview/edit mode) per page. This could be stored either somewhere in the .obsidian folder, the cache or in the frontmatter (but automatically).