How to start a DND Program

Type the command "dnd" at the prompt.

# dnd

You will see the dnd main window.

How to open file

Click the button "Open File", or Choose the File/Open.
You can see the "File Open Dialog",
You can choose the file format (PDB, CRD).

How to save file

Click the button "Save File", or "Save as" on the toolbar.
Click the File/Save or File/Save as on the menubar.
You will see the "File Save As dialog".