Highlight is an Android onboarding and guidance library that draws an overlay to visually emphasize specific UI elements and attach tip content, helping users discover features inside an app. It works by placing a translucent mask over a chosen “anchor” area (often the activity content view) and then “cutting out” or spotlighting target views so they stand out clearly. Developers can define one or more highlighted targets, supply a custom tip layout (for example, an arrow plus text), and...