PageBreakWithin is an option for Cell which specifies whether a page break should be allowed within the cell if the notebook that contains the cell is printed.
Plain
(Built-in Mathematica Symbol) Plain represents a font that is not bold, italic, or underlined.
ShowContents is an option for selections that specifies whether an object represented by a StyleBox should be displayed on the screen or replaced by blank space.
WindowMovable is a notebook option that specifies whether to allow the window for the notebook to be moved around interactively on the screen.
Hyperlink creates a hyperlink to a specified cell, notebook, or URL.
LiftingFilterData[...] represents lifting-filter data used to compute forward and inverse lifting wavelet transforms.
CComment[text] is a symbolic representation of a comment. CComment[text, {pre, post}] includes text to add before and after the comment.
$CharacterEncoding specifies the default raw character encoding to use for input and output functions.
EventHandler[expr, {"event_1" :> action_1, "event_2" :> action_2, ...}] displays as expr, evaluating action_i whenever "event_i" occurs in connection with expr.
CreateScheduledTask[expr] creates a task that will repeatedly evaluate expr once per second.CreateScheduledTask[expr, time] creates a task that will repeatedly evaluate expr ...