To customize a note's actions:
Right click on the titlebar of the note.
Select Note preferences...
The Local Settings - Knotes dialog will open.
Choose the Action icon from the three icons at the left.
The following choices are available
Type a mail command and any required command line switches in this box.
By using "%f" in the command line you can pass the filename of the note body to the mail command.
Type a printing command and any required command line switches in this box.
Use the following variables in the command line:
"%p" is the printer name.
"%t" is the title.
"%f" is the filename of the note body.