Scrollbars is an option for Pane that specifies whether scrollbars should be displayed.
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.
SpanSymmetric is an option for selections that specifies whether vertically expandable characters are symmetric about the axis of the selection.
StyleBoxAutoDelete is an option for selections that specifies whether a StyleBox wrapped around them should be automatically removed when the expression is edited.
Word
(Built-in Mathematica Symbol) Word represents a word in Read, Find, and related functions.
ZeroWidthTimes is an option for selections that specifies whether blank spaces representing multiplication are explicitly shown.
$DisplayFunction gives the default setting for the option DisplayFunction in graphics functions.
$NewMessage is a global variable which, if set, is applied to the symbol name and tag of messages that are requested but have not yet been defined.
$SoundDisplayFunction gives the default setting for the option DisplayFunction in sound functions.
Entering Greek Letters Entering Two-Dimensional Input Editing and Evaluating Two-Dimensional Expressions