MultilineFunction is an option for UnderscriptBox and related box objects that specifies what to do when the contents of a box object are too long to fit on one line.

Notebook[{cell_1, cell_2, ...}] is the low-level construct that represents a notebook manipulated by the Mathematica front end.

SpellingOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for notebooks that specifies settings for spell checking.

SqrtBox[x] is a low-level box construct that represents the displayed object Sqrt[x] in notebook expressions.

StyleData["style"] is a low-level representation of the contents of a style definition cell.StyleData["style", " environment"] represents the contents of a style definition ...

x *= c multiplies x by c and returns the new value of x.

$ContextPath is a global variable that gives a list of contexts, after $Context, to search in trying to find a symbol that has been entered.

When you make a definition in the form f[args]=rhs or f[args]:=rhs, Mathematica associates your definition with the object f. This means, for example, that such definitions ...

There are some close connections between finding a "local minimum" and solving a set of nonlinear equations. Given a set of n equations in n unknowns, seeking a solution r(x) ...

Mathematica includes many commands for word processing and formatting. You can set the following cell options from the Format menu: style, font, face, size, text color, ...