UAE is based on the work of dozens of contributors including Bernd Schmidt (the original author and maintainer of UAE), Bernie Meyer (the author of the x86 JIT compiler), Toni Wilen (the current maintainer of WinUAE), and many more.

Double Line mode, rendering will be doubled vertically. It is compatible with high resolution games and Workbench, but scaling shaders will look ugly. "Double Line" shows interlaced fields separately (weave) and is suited for deinterlacing shaders.

Single Line mode, rendering is presented as is. It delivers the best of both worlds, and looks great with high resolution games, Workbench and shaders. "Single Line" combines interlaced fields into one field (bob), which will make high resolution images blocky and jittery.