Shows indicators on fluid connections, inserters, and mining drills.

Fluid connections

Less cluttered. Only shows indicators when attention is required.

Blue - Pipe is connected, or this fluid is connected in another pipe
Yellow - Pipe connection is blocked by another entity, or this fluid is not connected
Red - Pipe connection is blocked by an entity with fluid connections e.g. pipe to ground. Also when entities with different fluid filters are connected.

When a fluid is connected in another pipe, the indication level goes down.

More colorful. Shows indicators also on active and unnecessary connections.

Green - Pipe is connected
Blue - Pipe is not connected
Gray - Pipe is not connected but this fluid is connected in another pipe
Yellow - Pipe connection is blocked by another entity
Red - Pipe connection is blocked by an entity with fluid connections e.g. pipe to ground. Also when entities with different fluid filters are connected.

When a fluid is connected in another pipe, the indication level goes down.

Inserters and mining drills

Red - When pickup or drop position is obstructed or an open space not served by an inserter/drill
Yellow/nothing - Connected to a relevant entity or an open space served by another inserter/drill

Enable indicators on fluid connection entities
Off - Disabled
Lite - Only show indicators on issues
Full - Shows indicators in more cases
Enable indicators on inserters and mining drills
Only show indicators when hovering over entities
Ignore entities by name, for compatibility with mods that don't raise events on entity destruction

Indicators only disappear a frame after entities are removed or changed.
Mods that destroy entities without raising can cause indicators to get stuck. Use ignore entities to exclude them.