More mapwork: I’ve uploaded new versions of all the Memory Map (MM) overlays in the Hill Lists section of the main site.
A reader pointed out a difficulty when loading two or more of the overlays at the same time:- the Marks (as MM calls them - also known as POIs or Points Of Interest) for the hills all appear in the Overlay — Properties dialog at the same level in the Marks Category, and are therefore all mixed together along with any other Marks that happen to be in there. Since the hill icon is the same for every list, once loaded there was no way to distinguish which list a hill came from, and it would be useful to have either a different icon for each list overlay or a facility to Show or Hide all the hills from particular overlays.
I did think about having a different icon for each list a while ago, but although it might be feasible for specific cases where lists are mutually exclusive, it can’t be done satisfactorily in general because many hills appear in several lists. However the second option to switch entire overlays on or off with a couple of clicks turned out to be very easy with a feature of MM I haven’t used before:- User-defined Overlay Sub-categories.
Each of the new overlays now defines its own Sub-category for the Marks it contains, as in the screenshot right. In the Overlay — Properties, a Sub-category can be Shown / Hidden either by ticking / clearing its checkbox or right-clicking its name and selecting Show / Hide.
