Chyma adds two boolean variables to CustomHud that indicate whether JourneyMap's in-game minimap (not the full-screen map) is currently visible on the HUD. This extension requires Minecraft 1.21.1 and specific versions of dependencies (CustomHud v4+ and JourneyMap API v2 from beta 6.0+), and the mod's name is a simplified version of the acronym "CustomHud JourneyMap Addon".