Using

Basic Usage
You can use in the systemtray either as widget or classic application. Both share the same functionality but have a different and show the last item of the history when hovering the icon in the systemtray:
The icon.
The icon
The widget is hidden if the clipboard is empty.
To display the clipboard history, click on the icon in the systemtray.

Widget
The Widget.
The Widget
Hover an entry with the mouse pointer and four icons appear which enable you to invoke an action, show the barcode, edit the content or remove the entry from the history. Use to capture the barcodes and save them.
You can search through the clipboard history by opening it (click on ) and typing your query. The results are updated as you type. To clear the clipboard history click on the icon at the right of the search field.
The Configure Clipboard... action in the context menu opens the settings dialog.

Actions
can perform actions on the contents of the clipboard, based on whether they match a particular regular expression. For example, any clipboard contents starting with http:// can be passed to Firefox or as s to open. In addition, if the contents matches a path, similar actions can be performed according to the file's type. ⪚, if the path to a PDF file is copied to the clipboard, the file can be viewed in .
To use this feature, just select a or path. If there is a matching regular expression in 's list, a menu will appear showing you the programs for your selection. Use the mouse or cursor keys to select a program, and will run this program, opening the address pointed to by the selection.
You can change the time that the menu remains for in the settings dialog, with the option Show action popup menu under the General page. You can separately disable the file path part using the option Include MIME actions under the Action Menu page.
Actions can be disabled completely by pressing the shortcut X.
Clipboard contents which match a regular expression can also be edited before performing an action on them. Select Edit contents... at the right of the clipboard entry, and you can change the clipboard contents in the dialog which appears, before clicking the OK button to run the appropriate action.
Pressing R shows the pop-up menu to repeat the last action which performed.

Clipboard/Selection Behavior

General
can be used to set the behavior of the clipboard and selection in .
The uses two separate clipboard buffers: the selection and the clipboard. Text is placed in the selection buffer by simply selecting it, and can be pasted with the middle mouse button. To place text in the clipboard buffer, select it and press X or C . Text from the clipboard buffer is pasted using V or by selecting Paste in a context menu.

Changing Clipboard/Selection Behavior
In order to change clipboard/selection behavior, select Configure Clipboard... from the context menu, and in the dialog box that appears, select the General page. Unchecking Selection and Clipboard makes the clipboard and selection function as completely separate buffers as described above. With this option set, the option Ignore will prevent from including the contents of the selection in its clipboard history and from performing actions on the contents of the selection. Selecting Selection and Clipboard causes the clipboard and selection buffers to always be the same, meaning that text in the selection can be pasted with either the middle mouse button or the key combination V , and similarly for text in the clipboard buffer.