Question How do you mention people?

[30something]

How do you mention people like have the @ sign and the name show up blue so that person can be notified?

 

[Zaz]

Well you type the "@" sign followed by their name 20Something

 

[gn1g]

is there a shortcut?

 

[30something]

Zaz
I did it before it didn't work must have been another website... with same function Thanks a lot