You can use a container field to store files of any type, such as spreadsheet files, word processing files, or any other file type that you want to track. When you insert a file, FileMaker Pro displays the file’s icon and name in the container field, but not the actual content.
If you select Store only a reference to the file, FileMaker Pro doesn't import the file; it only keeps track of where it is on your hard disk. This option may reduce the size of your FileMaker Pro file, but if you move or delete the file, FileMaker Pro won't be able to display it.