Saving a project file gives you the ability to work on a project over several sessions. All of your project decisions are saved into a PhotoKey-specific project file. The next time you load the project file you can continue from exactly where you left it.
Images are not included in the project file. If you move the project file to a different computer or want to archive it you will need to copy or transfer the image files as well.
You should save your project at regular intervals, so that you don't have to worry about power loss or other technical problems.
Saving your project does not create an image file that you can use outside of PhotoKey. If you want to create an image file of your project to use in Photoshop and other editors you need to Export it.
Creating a new project
A new project can be created by clicking the New button on the Home screen, or by selecting New from the File menu.
Saving a project
The quickest and easiest way to save your project is to click the Save button 
on the navigation bar. This will update your saved project file. If it is the first time you have saved the project you will need to specify a location for the file. You can also use the keyboard shortcut CTRL+S (Cmd+S on Mac) to save your project at any time.
The File menu also has a Save option which works in the same way.
The Save As option creates an alternate version of your current project file, resulting in a new project file under a different name. After using Save As, the Save option will use the new filename and location instead of the original.
Opening a project
When you start PhotoKey your recent projects are listed on the Home screen, making it easy to resume work.
You can also open a specific file using the File -> Open menu option.