No documentation on values end1 and end2 in the Links Agent Monitor

[brandesNW]

In the Links Monitor how does one specify end1 and end2?
These are turtles, and the most obvious values to try are who numbers e.g. 0 or expressions using who numbers e.g. (turtle 0).

As indicated below neither of these works.

The documentation does not help. It gives an example for a patch but not for a link. It indicates that you can open agent monitors through the Tools menu or the inspect command.
The inspect documentation gives the example

inspect one-of links
;; an agent monitor opens for a random link

Create a Links Agent Monitor
Directions
Create two turtles
Create a link between them
Execute inspect link 0 1 in the command center

The monitor looks like this:

You might think that if you open a new Link Monitor and type (turtle 0) and (turtle 1) for end1 and end2 that would work.
However if you type (turtle 0) for end 1 and Return the value will disappear, which is how Agent Monitors generally work.
If guided by inspect link 0 1 in the documentation you enter 0 for end1, you get a runtime error. This is clearly an issue that needs to be fixed.

Has this feature ever worked? How is it supposed to work?

[LaCuneta]

With the merger of #2231 the behavior here is improved. As noted, you can now type turtle who numbers into the end1 and end2 fields, along with a link breed, and it will show the desired link. However this is what you see before specifying the breed:

This looks at a quick glance like it's a valid link, which might be confusing for users. I think that if a user types in two turtle numbers and a link exists between them, one of those links should be chosen and displayed. This matches how the patch monitor works, where entering a pxcor will pick and display one of the patches with that coordinate and allow the user to further refine (say, by pycor) if they want to afterwards.