Basically, you can receive radio-messages that appear in-game, in other users' games. If you choose to, you can upload your messages. It was originally intended for flotilla members to ease creating forum posts, but also supports a pseudo-flotilla ('RTE') that has no admin but is used for just message exchange (you'll also get messages from any flotillas that mark their messages as 'public').
From:
http://www.file-away.co.uk/captainstoolkit.html
The toolkit currently (Version 7) permits you to do the following:-
- For the Public Radio Text Exchange:-
- Receive messages from the RTE public flotilla (and for any flotillas that choose to mark their flotilla messages as 'Public')and place them in your in-game messages file (neither user-name nor password required).
- Complete a template for posting to the public Radio Text Exchange - you will need a name and password to do so.
- As a flotilla member for a flotilla NOT using the toolkit:-
- Copy BdU messages from a forum posting and turn them into an in-game radio message.
- Complete a template for a report to post to a forum via your clipboard (with options to extract relevant information from a game career).
- As a flotilla member for a flotilla that makes use of the toolkit for sending and receiving messages:-
- Copy BdU messages from a forum posting and turn them into an in-game radio message.
- View messages from and to your boat whether or not you choose to download them as in-game messages.
- Receive flotilla messages and place them in your in-game messages file (neither user-name nor password required)
- Complete a template for a report to send as a message within the toolkit, to BdU, as well as copying the message to your clipboard for posting to a forum, if necessary.
- View the current status (vessels sunk and tonnage) of your fellow flotilla members.
- As a flotilla administrator, perform BdU Management:-
- View UBoat dates and positions
- See the last posted message-date, location and in-game date for flotilla boats.
- Process forum messages from UBoats (that is, create a message for your members as if they were using the tool).
- Send messages from BdU to a boat (copying to the clipboard for use in a forum, if necessary).
- View the current status (vessels sunk and tonnage) of your flotilla members.
- Create new members
- Create new boats
- Assign members to boats
- Update assignments with merchant and warship numbers and tonnage, patrol counts, assignment status (e.g. KIA, Active Duty) and notes for yourself and other administrators (e.g. for Leave of Absence).