Based on common usage for interactive narrative games like those from LifeSelector, "pieces" (or nodes) in the game's XML structure are used to define scenes, choices, and branching paths.
If you are creating an XML file to drive a choice-based player, it generally follows a hierarchical structure like this: life selector xml
A Life Selector is a type of interactive engine (often found in text-based RPGs or psychological simulation games) where the user selects a series of attributes, events, and backgrounds to "generate" or "select" a virtual life path. Based on common usage for interactive narrative games
This feature allows game developers to define complex story trees, track player statistics (Money, Karma, Relationships), handle conditional branching (choices appearing only if criteria are met), and manage "Life Cards" (a common mechanic in this genre where players select background traits). Deep Guide: Life Selector XML 1
"Life Selector XML" is not a single standard or product. Instead, it refers to using XML as a declarative language to model branching life paths, choices, consequences, and persistent state tracking in interactive experiences.