The New Picture command on the View menu is used to create an additional Gas Man® Picture Panel view of the simulation in the currently active simulation window. The New Picture command invokes a cascading menu listing the agents already in the simulation, followed by a list of available agents (those not being simulated). At the beginning of the simulation (time zero), the entries in the list of available agents are enabled and can be chosen; after the simulation has started, however, only the existing agents are enabled.
If you choose an existing agent from the cascading menu, a new Gas Man® Picture Panel view of that agent is added to the currently active simulation window. If you choose an available additional agent, it is added (either creating a multiple agent simulation or adding another agent to one) and a new Gas Man® Picture Panel view of that agent is added to the active simulation window.