ResetDirectory (Built-in Mathematica Symbol)

ResetDirectory[] resets the current working directory to its previous value.

ReverseGraph (Built-in Mathematica Symbol)

ReverseGraph[g] gives the reverse graph of the directed g.

RowsEqual (Built-in Mathematica Symbol)

RowsEqual is an option for the low-level function GridBox that specifies whether all rows in the grid should be assigned equal total height.

SessionTime (Built-in Mathematica Symbol)

SessionTime[] gives the total number of seconds of real time that have elapsed since the beginning of your Mathematica session.

SetDirectory (Built-in Mathematica Symbol)

SetDirectory["dir"] sets the current working directory to dir. SetDirectory[] sets the current working directory to your "home" directory.

ShowCellLabel (Built-in Mathematica Symbol)

ShowCellLabel is an option for Cell that specifies whether to display the label for a cell.

ShrinkingDelay (Built-in Mathematica Symbol)

ShrinkingDelay is an option for dynamic objects that specifies how long to delay before shrinking the size of the region in which the object is displayed to the actual size ...

Skip (Built-in Mathematica Symbol)

Skip[stream, type] skips one object of the specified type in an input stream. Skip[stream, type, n] skips n objects of the specified type.

SpellingDictionaries (Built-in Mathematica Symbol)

SpellingDictionaries -> {opt_1 -> val_1, opt_2 -> val_2, ...} is a global option that specifies settings for spell checking.

StackBegin (Built-in Mathematica Symbol)

StackBegin[expr] evaluates expr, starting a fresh evaluation stack.