FrameBox (Built-in Mathematica Symbol)

FrameBox[box] is a low-level box construct which represents box with a frame drawn around it.

SetStreamPosition (Built-in Mathematica Symbol)

SetStreamPosition[stream, n] sets the current point in an open stream.

$FrontEnd (Built-in Mathematica Symbol)

$FrontEnd is a global variable that specifies to what front end object, if any, the kernel is currently connected.

RowBox (Built-in Mathematica Symbol)

RowBox[{box_1, box_2, ...}] is a low-level box construct that represents a row of boxes or strings in a notebook expression.

Apply (Built-in Mathematica Symbol)

Apply[f, expr] or f @@ expr replaces the head of expr by f. Apply[f, expr, {1}] or f @@@ expr replaces heads at level 1 of expr by f.Apply[f, expr, levelspec] replaces heads ...

BoxData (Built-in Mathematica Symbol)

BoxData[boxes] is a low-level representation of the contents of a typesetting cell.

MathLink Connection Management (Mathematica Guide)

SystemOptions (Built-in Mathematica Symbol)

SystemOptions["name"] gives the current setting for the internal system option with the specified name.SystemOptions[] gives the current settings for all settable internal ...

Scan (Built-in Mathematica Symbol)

Scan[f, expr] evaluates f applied to each element of expr in turn. Scan[f, expr, levelspec] applies f to parts of expr specified by levelspec.

Write (Built-in Mathematica Symbol)

Write[channel, expr_1, expr_2, ...] writes the expressions expr_i in sequence, followed by a newline, to the specified output channel.