ImageType[image] gives the underlying type of values used for each pixel element in the Image object image.
InString[n] is a global object that is assigned to be the text of the n\[Null]^th input line.
Italic
(Built-in Mathematica Symbol) Italic represents an italic font slant.
NotebookClose[notebook] closes the notebook corresponding to the specified notebook object. NotebookClose[] closes the current evaluation notebook.
NotebookDelete[notebook] deletes the current selection in the notebook corresponding to the specified notebook object. NotebookDelete[] deletes the current selection in the ...
NRoots
(Built-in Mathematica Symbol) NRoots[lhs == rhs, var] yields a disjunction of equations which represent numerical approximations to the roots of a polynomial equation.
Null
(Built-in Mathematica Symbol) Null is a symbol used to indicate the absence of an expression or a result. It is not displayed in ordinary output. When Null appears as a complete output expression, no ...
RowLines is an option for the low-level function GridBox that specifies whether lines should be drawn between adjacent rows.
RowSpacings is an option for the low-level function GridBox that specifies the spaces in x heights that should be inserted between successive rows.
SetDirectory["dir"] sets the current working directory to dir. SetDirectory[] sets the current working directory to your "home" directory.