Respackopts/docs/old/fallbacks.md

Fallback resources

You can select an option by providing a fallback in addition to conditions. If the conditions are not met, fallbacks will be used. If the first callback can't be used, A later one will be tried. If none can be used, the resource will be ignored.

Example

{
    "conditions": [
        {
            "not": [
                "example:useAlternate"
            ]
        }
    ],
    "fallbacks": [
        "assets/minecraft/lang/en_us_alternate.json"
    ]

}

Multiple alternatives

A fallback resource may provide their own conditions or fallbacks which will also be considered and can be used to allow users to select one of multiple resources