One of the big differences between Google Android and these other platforms is that it is an "open source" platform, meaning that the raw code is available for other developers to build upon and to expand.
To the epistemologist it seemed to confuse foundation and keystone, and to suppose itself to build upon the latter in a construction illegitimately appropriative of materials otherwise accumulated.
A cake mascara is a glamorous and feminine product that is easier to apply and build upon than wand varieties, yet they offer softer and richer lash definition.
The beauty of mineral makeup is that it's easy to build upon.
Pixel.Paint.Papers. has a few digital scrapbooking tutorials suitable for crafters looking to build upon basic skills.