The File menu offers the following commands:
| New | Creates a new simulation (SHORTCUT: CTRL+N) |
| Open | Opens an existing simulation (SHORTCUT: CTRL+O) |
| Open Recent | Lists recently saved documents that can be opened |
| Save | Saves an opened simulation using the same file name (SHORTCUT: CTRL+S) |
| Save As... | Saves an opened simulation to a specified file name |
| Close | Closes an opened simulation (SHORTCUT: CTRL+W) |
| Close All | Closes All open simulations (SHORTCUT: CTRL+SHIFT+W) |
| Run | Starts/Stops the current simulation |
| Run All | Starts/Stops all open simulations |
| Prints a simulation | |
| Print Preview | Displays the simulation on the screen as it would appear printed |
| Page Setup | Selects a printer and printer connection |
| Print Select | Selects the various options for printed output (Synopsis, Graphs, Screen image) |
| Export to... | Saves the open simulation as a PDF, XML, or HTML document |
| Simulation Description | View/Edit the simulation's description. The simulation description appears in print and export output, on the title bar of Gas Man® windows, and is used to suggest a file name when saving a previously unnamed simulation. |
| Send... | Sends the active simulation through electronic mail |
| Exit | Exits Gas Man® |