Hush Line site: The website that your Hush Line form is available at. If you're running Hush Line in "Tor-only" mode, your Hush Line site will have a URL like
http://vfalkrrucjb7pztjskfumnqytpze5iimu4i2t2ygwv6ntylvylt2flad.onion and will be only accessible through the Tor Browser.
Hush Line form: The text box form that occupies your Hush Line site. Community members may choose to type and submit a message through this form (thus becoming a source).
community: The pool of people who know your Hush Line site's URL. If you only share your Hush Line site's URL with a team of employees, that's your community. If you promote your Hush Line address publicly, your community may be very large.
community member: A member of your community. A person who is a potential source.
source: The community member who has written and submitted a given message
message: The text that a source submits to your Hush Line form. Hush Line only accepts text messages (no multimedia or file attachments). All Hush Line messages are encrypted and thus private. Also note that Hush Line messages only go one-way: from source to user.
Hush Line user: The person who runs the Hush Line. We assume the user has access to the Hush Line email address and Hush Line PGP key.
Hush Line email address: The email address that receives your Hush Line messages from your sources
Hush Line PGP Public Key: The PGP public key that Hushline uses to encrypt all messages before sending emails to your Hush Line email address.
Hush Line PGP Private Key: The private PGP key the user uses to decrypt Hush Line messages. The PGP password is also needed to decrypt messages.
Hush Line PGP password: The password needed, in combination with the Hush Line PGP Private Key, to decrypt and read messages. (Keep this secret.)