I want to draw a keyboard layout.  So I want tens of rectangle boxes with a text element in them.  The (mostly) single letter text must be centered in the rectangle.  I guess I could center the text by hand but what about anchoring the text element over the box and letting the system work it out? 

I´d use Align+Distribute panel to arrange keys and glyph placement. "Equal width" is key here and I´d go row by row:

A fast and smart way to do. Thanks.