Here the standard procedure used by Mathematica to evaluate expressions is described. This procedure is the one followed for most kinds of expression. There are, however, ...

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

DelimiterFlashTime is an option for cells and notebooks that specifies how long in seconds a delimiter should flash when its matching delimiter is entered.

Direction is an option for Limit that specifies the direction in which the limit is taken.

MenuSortingValue is an option for cells and notebooks that specifies where a cell style, stylesheet, or palette is listed in the Format \[FilledRightTriangle] Style submenu, ...

RowsEqual is an option for the low-level function GridBox that specifies whether all rows in the grid should be assigned equal total height.

ViewRange is an option for Graphics3D and related functions which specifies the range of distances from the view point to be included in displaying a three-dimensional scene.

Type the expression that will have an overscript. Type x. Create an overscript by pressing the Control key and the 7 key at the same time.

If[condition, t, f] gives t if condition evaluates to True, and f if it evaluates to False. If[condition, t, f, u] gives u if condition evaluates to neither True nor False.

Finding elements that match a pattern. This gives the elements of the list which match the pattern x^_. Here is the total number of elements which match the pattern.