AutoDelete is an option for boxes that specifies whether a box is automatically deleted when its contents are edited.
AutoItalicWords is an option for Cell that gives a list of words that should automatically be put in italics when they are entered.
Automatic represents an option or other value that is to be chosen automatically by a built-in function.
AutoSpacing is an option for Style and Cell that specifies whether spaces between successive characters should be adjusted automatically.
BellB
(Built-in Mathematica Symbol) BellB[n] gives the Bell number B_n. BellB[n, x] gives the Bell polynomial B_n (x).
CellLabelPositioning is an option for cells that specifies where the label for a cell is positioned.
ClearSystemCache[] clears internal system caches of stored results.
CreateScheduledTask[expr] creates a task that will repeatedly evaluate expr once per second.CreateScheduledTask[expr, time] creates a task that will repeatedly evaluate expr ...
Darker
(Built-in Mathematica Symbol) Darker[color] represents a darker version of the specified color. Darker[color, f] represents a version of the specified color darkened by a fraction f. Darker[image, ...] ...
DefaultNaturalLanguage is an option for character selections that specifies the language used when checking the spelling of a word in a human natural language selection.