Copy Hyperlink copies the selected (or clicked upon) hyperlink text to the clipboard.
Editable toggles whether a cell can be edited or not.
InputForm Display displays the selection in Mathematica InputForm without interpreting it.
Install opens a dialog to install a chosen Mathematica palette, stylesheet, package, or other item in the correct location.
Object opens a dialog to insert an embedded object, such as a bitmap image, spreadsheet, or document file, at the insertion point (Windows only).
Open in New Window opens the selected (or clicked upon) documentation link in a new help viewer window.
Picture inserts a picture from a file or inserts an empty graphic at the insertion point.
StandardForm Display displays a selection in Mathematica StandardForm.
Text Display displays the selection as plain text without interpreting it.
Black
(Built-in Mathematica Symbol) Black represents the color black in graphics or style specifications.