There is one
which manages the contents of the system-wide clipboard for
Data can be entered into the clipboard in one of two ways: by setting
the current clipboard string, or by installing a
clipboard-client% object. When a client is installed,
requests for clipboard data are directed to the client.
Data is always retrieved from the clipboard as a string. When retrieving clipboard data, a data type string specifies the format of the data string. The availability of different clipboard formats is determined by the current clipboard owner.