Keep your eLearning navigation controls simple and straightforward, so that online learners can get through the eLearning course with minimal stress. (elearningindustry.com)
The option to hide the launch bar is clever too, because you then get to use the full screen space, rather than having persistent navigation controls as you might in some apps. (pocket-lint.com)
The optional navigation control is a must to complete the system. (thesupercars.org)