Missing definition for "user agent"

[vkatsikaros]

In chapter Abstract:

user agents

user agent is used throughout the spec but it's not defined somewhere.

https://html.spec.whatwg.org/ still hasn't a definition for user agent. Once issue whatwg/html#1021 is resolved, an HTML dependency could be added here.

[shs96c]

There isn't a central definition, and it looks like that HTML bug isn't being resolved in a hurry. I'm fine with relying on the same level of accepted understanding that the HTML spec currently has.

[andreastt]

I concur. Removing it from being a Level 1 milestone.