The other day I was watching a customer modify his Cisco switch configuration and noticed that he was manually typing in every interface. I asked if he was familiar with the range parameter and when he replied no, I showed him how it could save time and typos.
He was so grateful and suggested I post that simple tip for everyone else who may not be aware.
In this video I cover this portrange tip.
I also showed him how to use notepad to edit his configuration and then simply paste the new config back into his telnet session.