[PM+] Project Window

Can the folder of source files be displayed on the Project window?

To view a folder that contains the source files, place the mouse cursor on a source file name on the Project window. The source file name indicated by the mouse cursor will be displayed in a pop-up, with the directory in the full path.

It can also be checked in "Path Name" on the Properties dialog box that is displayed by right-clicking a source file name and select [Properties...] from the pop-up menu.

Based on what are the source files displayed in the Project window aligned?

The source files are aligned in the order in which they are registered (built) in the [Source File] tab of the Project setting dialog box.
If the order of registration is changed by selecting a source file from the source file list on the [Source File] tab and clicking the <↑> or <↓> button, the order of source files in the Project window is changed accordingly.

It is also possible to sort the source files in ascending order.
Select a project name on the Project window, right-click to open the pop-up menu, and then select "Ascending order".