What is the @" "@ notation in powershell

PowerShell Help
1

I’ve seen this at sign and open close quote notation in a couple of scripts but I don’t understand it’s function. I know an @{} creates an associative array. Is this the same thing just using quotation marks instead of brackets?

2

Herestring for specifying multiline strings: https://technet.microsoft.com/en-us/library/ee692792.aspx

3

Thank you!