Plain
(Built-in Mathematica Symbol) Plain represents a font that is not bold, italic, or underlined.
PrintingStyleEnvironment is an option for notebooks which specifies the style environment to be used in printing the notebook on paper.
ScreenRectangle is a global option that specifies the position of the screen by giving the coordinates of two diagonally opposite corners.
ScreenStyleEnvironment is an option for notebooks that specifies the style environment to be used in displaying a notebook on the screen.
SyntaxLength["string"] finds the number of characters starting at the beginning of a string that correspond to syntactically correct input for a single Mathematica expression.
Thumbnail[image] gives a thumbnail version of an image.Thumbnail[image, size] gives a thumbnail with the specified maximum pixel size.
UsingFrontEnd[expr] evaluates expr, making use of a front end if necessary.
$SharedFunctions is the list of functions currently being shared among parallel kernels.
$SharedVariables is the list of variables currently being shared among parallel kernels.
Limit[expr,x->x_0] tells you what the value of expr is when x tends to x_0. When this value is infinite, it is often useful instead to know the residue of expr when x equals ...