As its name implies, a path alias is another name for all or part of the full specification of a file. You use path aliases to quickly insert frequently referenced files — for example, map files, import files, and bitmap image files. Rather than entering the complete file specification for each file, you can use path aliases to reference any part of the specification.
You can also use path aliases whenever automatically updating information would make maintaining your diagrams easier. For example, suppose an animate block referenced numerous bitmap images in C:\MYTEST\BMPS. If you moved the location of the bitmap images to C:\DIAGRAMS\BITMAPS, changing each file specification of each referenced bitmap would be a frustratingly long exercise. With path aliasing, you only update the path alias once for Embed to correctly locate each bitmap image.