Stylesheet assigns a stylesheet to the current notebook.

AbsoluteOptions[expr] gives the absolute settings of options specified in an expression such as a graphics object. AbsoluteOptions[expr, name] gives the absolute setting for ...

All is a setting used for certain options. In Part and related functions, All specifies all parts at a particular level.

p_1 | p_2 | ... is a pattern object which represents any of the patterns p_i.

AnimationDirection is an option which specifies the direction to run an animation.

Axis is a symbol that represents the axis for purposes of alignment and positioning.

BitNot[n] gives the bitwise NOT of the integer n.

_or Blank[] is a pattern object that can stand for any Mathematica expression. _h or Blank[h] can stand for any expression with head h.

BoxBaselineShift is an option for AdjustmentBox that specifies how much the baseline of the box should be shifted relative to those of neighboring characters.

BoxStyle is an option for three-dimensional graphics functions that specifies how the bounding box should be rendered.