The folders in the File Manager are like the ones in the Windows Explorer. These folders reside on your computer and support relative paths - paths from the project folder to files in your folders. This folder structure makes it easier to organize your files.
The File Manager window displays all the files associated with your project. Files are grouped by type.
block symbol files
schematic files
VHDL package
HDL
SmartGen cores
design implementation files
synthesis files
physical synthesis files
stimulus
Right-clicking a file in the File Manager provides a menu of available options specific to the file type. You can also delete files from the project by selecting Delete from Project from the right-click menu.
Tip: You can drag files in the File Manager to re-order them.