Unofficial compatibility patch for Pipe Visualizer (by ashier) to support Factorio 2.1. Visualize the layout and contents of pipe networks. Press Y to draw the selected entity's fluid systems. Press Shift + Y to draw all visible fluid systems. Press Alt + Y to automatically visualize systems on mouse-over. Press Control + Y to toggle between color-by-fluid and color-by-system.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.