@umbraco-cms/backoffice
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    Variable UMB_WORKSPACE_PATH_VARIANT_DELIMITERConst

    UMB_WORKSPACE_PATH_VARIANT_DELIMITER: "_&_" = '_&_'

    The delimiter is used as a unique separator between multiple variant ids in the URL. The chosen delimiter '&' is unlikely to appear in either the workspace path or the variant id, making it a safe choice for this purpose.