Nozzle clogging on x1carbon

I rarely have a problem with nozzle clogging, and have forgotten how to perform a “cold-pull” on my X1Carbon. I think I turned the printer off due to a failed print, without pulling filament back -Filament loads into the print head all the way up to the nozzle, then reverses - I can feel something soft in the nozzle, but have forgotten how to clean it out. Any suggestions would be appreciated!

Sorry folks, I figured it out from the wiki, issue resolved, closing this up.