Mathematica provides standardized special characters to represent various forms commonly used to annotate or structure text.
ODS
(Mathematica Import/Export Format) MIME type: application/vnd.oasis.opendocument.spreadsheet OpenDocument spreadsheet file. Used for storage and exchange of spreadsheet data and formulas. Is part of the OASIS ...
XBM
(Mathematica Import/Export Format) MIME type: image/x-xbitmap X Window bitmap format. Used in the X11 windowing system for storing icons, cursors, and other graphics resources. ASCII format. Stores a ...
StochasticMomentumIndex
Copy Graphics Selection copies the selected (or clicked upon) object within the graphic to the clipboard.
Input from Above copies and pastes contents of the nearest preceding input cell.
X Environment Information opens a dialog box that displays the current attributes of the X front end environment (X only).
ActiveStyle is an option for Hyperlink and related constructs that specifies styles to add when the constructs are active, typically as a result of the mouse being over them.
AlphaChannel[image] returns the alpha channel of image.
Beep
(Built-in Mathematica Symbol) Beep[] generates an audible beep when evaluated.