Obscuring active elements and text

*Obscuring Functionality or Text* Pointers icons, messages or tooltips
should not obscure active elements that depend on the pointers, messages or
tooltips for activation or understanding.
With large print, especially when reformatting is necessary, large objects
may overlap. When one of these is a active element operability can be
impaired. There should be some mechanism to position objects so they do not
interfere with each other.