This Layout is based on the german ergonomic keyboard-layout Neo. The alphabetic keys are similarly arranged. The symbols are moved slightly in Layer 2 (aka Layer 3 in Neo) and some are not supported.
Due to fewer keys than an 100% Layout space is a reare resoucre. Especially with german specific symbols like (üöäß). Inspired from other keyboard-layouts I used MT(MOD, KC) to integrate the modifieres *MOD_LGUI*, *MOD_LCTL*, *MOD_LALT*, *MOD_LSFT* in the homerow. So on the alphabetic Layers and the navigation layer are shortcut combinations incredibilly easy.