Centering text inside char bax

[bplus]

Ok, bplus, got it! I re-named a few variables to help my dull brain assimilate it better, and changed some parameters to suit.
I'll acknowledge your help when I publish and become rich and famous. May be a while, but...  

@mnrvovrc:  I'm not into fancy dialogs, but now I have a new word to "investulate": $noprefix. Thanks for your input.

That's how I learn making code I have a use for, to make it better to understand and use for myself.

Naming variables and comments so I know what it is about 5 years later is very helpful.