Assumption : no bookmarks yet
Take a project, insert(toggle) a bookmark in a certain
file. Put your cursor some lines down. Goto that
bookmark (bookmark 1, that is in this case), woohoo,
cool, works. Now close your project (not devcpp).
And .... reopen the project.
Goto bookmark 1, oops, doesn't work anymore. Well maybe
the bookmarks were not saved. Let's check, right click,
toggle bookmark. Heyyyyy, the bookmark is still
checked. Something's wrong : either is should not be
checked anymore, or the bookmark had to be saved (in
the project layout file I would suggest).