How to make an NPC/Entity make a menu when pressing the "use" key on it?

[misterbundy]

I'm trying to make an NPC or an Entity in Garry's Mod have a menu pop up when I hit "use" on them, but I can't seem to figure it out. Really really new to coding, would appreciate help. Sorry if it's already on the wiki, but I can't find it.

[nedredl]

There really needs to be some kind of collaborative user-created snippet page or something.. too many questions get asked over and over again.

Google for gmod NPC shop and you'll find code for it.

[Skere_]

Could have some outdated code, but you could take a look at this
[url]https://maurits.tv/data/garrysmod/wiki/wiki.garrysmod.com/index7853.html[/url]

[apoona]

[URL="https://wiki.garrysmod.com/page/Net_Library_Usage"]https://wiki.garrysmod.com/page/Net_Library_Usage[/URL]
[url]https://www.youtube.com/watch?v=ODlGyS6lR1M[/url]
[lua]
function ENT:Use( activator, caller )
// bleh
end
[/lua]