SelectionMove[obj, dir, unit] moves the current selection in an open notebook in the front end in the direction dir by the specified unit. SelectionMove[obj, dir, unit, n] ...
ShowClosedCellArea is an option for cells that specifies whether a rectangular bar is displayed next to a closed cell group to indicate the number of cells in the group.
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.
SpanAdjustments is an option for selections that specifies the height and width of spanning characters.
SpanSymmetric is an option for selections that specifies whether vertically expandable characters are symmetric about the axis of the selection.
TooltipDelay is an option for objects such as Tooltip that specifies how long to delay after the mouse is over the object before displaying the tooltip.
WindowToolbars is a notebook option that specifies the toolbars to include at the top of the window used to display the notebook on the screen.
$Echo
(Built-in Mathematica Symbol) $Echo gives a list of files and pipes to which all input is echoed.
$GeoLocation is a settable global variable that specifies the default geodetic location to use.
$MachineDomains is a list of strings giving the names of the current network domains associated with the computer on which Mathematica is being run.