Clippy overrides the standard JBuilder keystrokes for doing cut, copy & paste operations so that it is transparent to use.
Pressing Alt+B brings up a buffer selection dialog which allows you to select the current buffer from its contents.
Pressing Alt+R toggles the ring-buffer mode. When the ring-buffer mode is enabled, Clippy will automatically select the next buffer after doing a cut or copy operation. Clippy will cycle around the buffers in a ring.
The number of buffers Clippy provides can be configured by altering the property:
clippy;buffer.count
in the user.properties file. No matter how many buffers are configured only the first eight will
be selectable by hot keys. Further buffers must be selected via the buffer selection dialog.