Just run TreePad on the background, with Automatic paste (also known as Autopaste) enabled, and forget about it while you browse documents, web pages, e-mails and newsgroups. Each time you highlight and copy a piece of text (to the Windows Clipboard), it is automatically pasted into TreePad at the position of the cursor in the current article, or a separate article for each clip if you choose. If you have enabled sound, you will hear a beep each time this happens.
To remind you that Automatic paste is ON, the Article ruler blinks blue. When Automatic paste is on, Autosave is disabled. You are warned about this beforehand and can save manually.