I have been a developer for more than 20 years and a technical writer for even longer. One of the first commercial software applications I built was a mobile airline booking, payment, and travel management app. To create a viable mobile help system required me to design on-screen real-time help, focused on the specific task a user was performing. This included tooltips for each task and each screen element. With limited screen real estate and limited device memory, tooltips had to be hyper focused and effective. My journey into context sensitive help (CSH) had begun.