I would like to create a Rule or an Agent that in Map view (and if possible also in Hyperbolic view) changes the color (e.g., from black to red) of the basic links to and from a note whenever that note is selected and that turns them back to their original color (i.e. black in the example above) whenever the note is no longer selected. However, I am stuck at the first step: I thought I would start by taking advantage of an existing System Attribute of the Boolean type (e.g., something along the line of $Selected=true/false), but I could not find such an Attribute. I realize that one can create User Attributes, but I have no idea how I could create a User Attribute that automatically switches to true when a note is selected and to false when the note is no longer selected. That I don’t know how to do it doesn’t of course mean that it’s not possible; therefore, I was wondering whether someone could please be so kind to point me in the right direction. Thank you for your consideration.