Well if the lady assisting you at the Dept of Motor Vehicles to renew your license was named KATHERINE and you kept calling her Kat, you might not have your drivers license updated.

Please try to remember this is an International board and items that may or may not disturb you, may disturb other members.

As for the Standards. Currently there are NO agreed upon standards for variable naming conventions with KiXtart.

You are free to use any name that makes sense to you.
My own personal preference is (as shown by Bryce) to avoid single letter abreviations for variables. They are quite valid, but mean little to you or another Admin down the road who has to maybe update your code. I would recommend using small variables that make sense to most people when and where possible.

Good luck.