ContourStyle is an option for contour plots that specifies the style in which contour lines or surfaces should be drawn.

"AboutBoxDialog" is a front end token that opens a notebook containing information about Mathematica.

"Above" is a front end token that creates an OverscriptBox and fills the base with a selection.

"Below" is a front end token that creates an UnderscriptBox and fills the base with a selection.

"CellContextDialog" is a front end token that opens the Cell Context dialog.

"ClearCellOptions" is a front end token that removes all explicit option settings for a cell.

"Clear" is a front end token that deletes a selection without copying it to the clipboard.

"ExpandSelection" is a front end token that selects the next smallest subexpression containing a selection.

"ExplainBeepDialog" is a front end token that opens the Why the Beep? dialog with an explanation of why the front end produced a beep.

"Import" is a front end token that opens the Insert File dialog.