Undefined Tag View
In Querki, it is entirely legal to refer to the name of something you haven't written yet --
for instance, Tags are often names with no definition. So the question becomes, what should be
displayed when you click on one of these tags, since it doesn't point to a real Thing?
The Undefined Tag View Property defines that. It is a Large Text that is defined on the Space; when
you try to look at an unknown name, it will show this text. You can put QL expressions in here; they
will receive the Name that you are trying to look at.
You can also put an Undefined Tag View on a Model, which basically means that all Tags of this Model
will use that View. (Technically, this means all Tags that are used in a Tag Set whose Restrict to Model
points to this Model.)
There is a simple default value that is defined on every Space by default. But you should feel free
to override that to do something more interesting, especially if you are doing interesting things
with Tags in your Space.
