Attributes
Attributes are special configuration properties that can be added to anything. Gybasoft products use them extensively to add optional settings to a lot of stuff.
You can add attributes to instances by opening the Properties
window, selecting the thing you want to add an attribute to, and scrolling to the very bottom of the Properties
window. Press the +
button next to Attributes
and insert the name and type required by that attribute (both of those are always provided)