Friendly property name

http://superuser.com/questions/875845/extract-site-names-from-properties-application-pool

http://serverfault.com/questions/633765/unselectable-property-in-iis-powershell-module

I can't remember what this is called. Isn't it a gotcha? It's using some sort of "friendly" name.

It's sorta like when you do Get-Process, and it shows WS(K). But you don't do "Get-Process | Select WS(K)" you just do " | Select WS" to get it. Why is it different?