FractionBoxOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for cells that specifies settings for FractionBox objects within the cell.
Front
(Built-in Mathematica Symbol) Front is a symbol that represents the front of a graphic for purposes of placement and alignment.
IncludeConstantBasis is an option for LinearModelFit and other fitting functions that specifies whether a constant term should be included if not explicitly given in the list ...
IntegerString[n] gives a string consisting of the decimal digits in the integer n. IntegerString[n, b] gives a string consisting of the base b digits in the integer n. ...
LinkLaunch["prog"] starts the external program prog and opens a MathLink connection to it.
Manual
(Built-in Mathematica Symbol) Manual represents an option or other value that is to be selected manually, usually by some form of interactive manipulation.
MessageDialog[expr] puts up a standard message dialog that displays expr together with an OK button.MessageDialog[expr, {lbl_1 :> act_1, lbl_2 :> act_2, ...}] includes ...
NotebookSave[notebook] saves the current version of the specified notebook. NotebookSave[notebook, " file"] saves the notebook in the specified file. NotebookSave[] saves the ...
OpenRead["file"] opens a file to read data from, and returns an InputStream object.
Operate
(Built-in Mathematica Symbol) Operate[p, f[x, y]] gives p[f][x, y]. Operate[p, expr, n] applies p at level n in the head of expr.