"CellContextDialog" is a front end token that opens the Cell Context dialog.
"CellLabelsToTags" is a front end token that gives a selected cell a cell tag that is the same as its current input or output prompt.
"CellMerge" is a front end token that merges the selected cells into one cell.
"CellTagsEditDialog" is a front end token that opens the Edit Cell Tags dialog.
"CellUngroup" is a front end token that ungroups selected cells.
"ClearCellOptions" is a front end token that removes all explicit option settings for a cell.
Clear
(Mathematica Front End Token) "Clear" is a front end token that deletes a selection without copying it to the clipboard.
"CloseAll" is a front end token that closes all open documents and palettes.
Close
(Mathematica Front End Token) "Close" is a front end token that closes the input notebook.
"ColorSelectorDialog" is a front end token that opens the Color dialog.