I never remembered the "sw" keyword

a small step for programmer
a big step for usability, especially for the non-native english speaker
among us

"tag" is not *that* long to write, and much mor easier to remember than
"sw"

I don't know if it's possible to add two keywords to don't disturb the
actual users of your extension but for newcomer I think it would be
really better to change the keyword.