I bought these - spot on! Definitely helps minimise tickets over basic things... which most people want to help themselves I find!
I had these for another billing software aswell- I'm convinced it's saved me countless hours!
Ease of use -
Pay and send logo
phpmyadmin and ftp
Done
Numbered so as not to interfere with any you've made aswell! Bonus!
Couple of grammatical errors, which I've edited out - but nothing that looks bad at all! 4.9/5 for me!