Likely they mean an immediate mode UI [1], as opposed to a traditional retained mode UI. Immediate mode UIs have gained a lot of popularity in the games/graphic

Likely they mean an immediate mode UI [1], as opposed to a traditional retained mode UI. Immediate mode UIs have gained a lot of popularity in the games/graphics world over the past few years. [1] https://en.wikipedia.org/wiki/Immediate_mode_GUI https://en.wikipedia.org/wiki/Immediate_mode_GUI