AV Routing Mapper

Cases: add one from the toolbar, then set its name, size in U, and whether U1 is at the bottom (rack standard) or the top. Drag a case by its title bar to move it; you can have as many as you need.
Gear: drag from the left palette into a case, or click to drop it into the first free slot. Each item has a U height you can change, and moving it snaps to whole rack units. Occupied slots are refused, and the drop marker turns red when it won't fit.
Moving between cases: drag a unit across to another case, or pick a different case from its properties panel.
Front / Rear: Front view is your elevation drawing. Flip to Rear view to see each unit's connectors and drag between them to patch the rack internally — the cable types and colours are shared with the routing page.
Capacity: each case header shows used and free U, and "Pack gear to the top" closes up any gaps.
From Routing Page: click an item in that sidebar list to drop it into a case with its ports already set up, instead of entering it twice.
Export: rack elevation PDF (drawn to scale, with the patch list), rack build list CSV, and rear patch list CSV.

Equipment

Rebuild creates one channel per mic and DI input on the stage.