You access the file type attribute through the Select Attachments Attributes dialog (choose the Attachment Attr. button on the Fax Composer window).
When you add a file to the attachments list, Faximum automatically tries to determine the file type. After you add a file it is a good idea to check the file type to make sure that Faximum is using the file type you expect. You should also view the fax to make sure that the file will be rendered correctly.
You normally do not need to change the File Type attribute. Only change it if you want to "force" Faximum to use a different file type. The following are examples of when you would change the File Type attribute:
For example, this can happen with some types of PostScript PCL files. When checking the file type the first time Faximum may decide that the file is an ASCII file. In this case you can try changing the file type to PostScript. PCL.
Note that the Postscript source file for an image can be a very large file. If you do this make sure you view the fax before you send it to make sure you want to fax that much data.
Make sure you view the fax after changing the file type to make sure the results are what you expected.
For a list of supported file types, see Supported File Types.