1. Click File and select a file from the File menu. The four most recently opened files are listed. To open a file not on this list, go to step 2. Otherwise skip to step 5.

3. Locate the file in the default directory or browse to a different directory.

4. To narrow your search, select files of type .prt or .asm from the Type list on the lower-right.

5. Double-click the file or click Open to open the file.