Why does WhAEM not have a save command?
WhAEM is a database program. This means that data management does not occur in RAM to be saved to disk by an explicit user action (clicking on Save), but any data modifications in WhAEM are immediately implemented in a database, which resides on the disk. This is similar to the way the database program Access or the financial management program Quicken works. Consequently, WhAEM has no Save option, but you will find a Make Duplicate Database… option on the Project menu. If you want to make changes in a model and not loose the current model, you must make a duplicate database under a new name before you make your modifications. The database on disk is also referred to as the project file and has the extension .whm. The graphical user interface (GUI) uses various additional files to communicate with the Solver. For each project (file) you should also define a unique Base Filename, which is done on the Project Settings dialog box (Project>Project Settings).
