Points to note in the screenshot:

• There are 3 network tabs - the project contains 3 networks loaded by drag and drop
• The reservoir selected in the tree is highlighted in the network map – all selections made in the map view will also be made in the map view and vice versa
• Pipe thickness and tank symbol size indicate the relative diameter of the pipes and tanks
• The orange-red arrows indicate flow direction at the current time in the simulations as analysed by the program.  These arrows move with time to reflect network conditions during the simulation.  An arrow pointing across a pipe, pump or valve indicates that there is currently no flow in that item.
• The asterisk (*) next to the project filename in the title bar indicates that the network has been changed since it was last saved