Hi Esteban,
The "Message Window" does something like this already. If you go to View > Message Window (or press shift-M), it will open up an interface to save a message (assuming recording is active). By default, the message will be timestamped to the moment the window is opened, or you can hit the "reset" button to update the message timestamp to a new point in time.
You can also save messages by clicking the "Send" button in the message center, and it will write the contents of whatever's in the corresponding text box.
All messages will be saved in the MessageCenter events folder, with timestamps aligned to the first data stream in your signal chain.
Best,
Josh