Abstract: According to various embodiments, a user interface (UI) includes a precedence graph area and an icon list displaying multiple types of program icons. A user selection of one of the program icons is received, the user selection corresponding to moving the selected program icon to the precedence graph area, the selected program icon referencing a composer UI to generate content of a specific media type. The selected program icon is characterized as a first program-content-pairing icon that references the content created by the composer UI. Thereafter, a user interaction with a plurality of program-content-pairing icons in the precedence graph area is detected, the user interaction corresponding to specifying an ordering of the plurality of program-content-pairing icons. A program flow precedence graph referencing a program flow of an interactive program is the generated, based on the ordering of the program-content-pairing icons in the precedence graph area.