Action Bar

The action bar sits below the menu and changes based on the selected tool. It contains paint mode selection, brush settings, tile/wall pickers, and tool-specific options.

Components

The action bar can show different panels depending on the active tool:

Panel	When Visible	Purpose
Paint Mode	Pencil, Brush, Fill	Select what you're painting (tile, wall, wire, liquid, track)
Brush Settings	Brush, Morph, Hammer	Brush size, shape, and outline
Morph Biome	Morph tool	Biome type and conversion options
NPC Selector	Point tool	Select which point or NPC home to place

See each linked page for details.