IGPAPI
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    Variable ScreenTrailRootSchemaConst

    ScreenTrailRootSchema: Struct<
        {
            input: optionalKey<Codec<Json, Json, never, never>>;
            position: optionalKey<Codec<Json, Json, never, never>>;
            screen: refine<
                | "FeedTimeline"
                | "ShortUrlFeed"
                | "ClipsViewer"
                | "CommentsV2"
                | "Explore"
                | "SearchTypeahead"
                | "SerpTop"
                | "SerpUsers"
                | "UserDetail"
                | "ProfileMediaTab"
                | "ContextualFeed"
                | "DirectInbox"
                | "DirectThread"
                | "CustomizeChat"
                | "DirectThreadThemePicker"
                | "DirectThreadDetails"
                | "DirectThreadSharedMedia"
                | "DirectThreadNicknames"
                | "DirectThreadNicknameChange"
                | "DirectThreadCustomGroupNameAndImage",
                String,
            >;
        },
    > = ...

    The root of a trail: the screen the process's launch edge opened first, with its encoded input and position.