RenameDirectory["dir_1", "dir_2"] renames the directory dir_1 to dir_2.
RowSpacings is an option for the low-level function GridBox that specifies the spaces in x heights that should be inserted between successive rows.
Run
(Built-in Mathematica Symbol) Run[expr_1, expr_2, ...] generates the printed form of the expressions expr_i, separated by spaces, and runs it as an external operating system command.
RuntimeOptions is an option for Compile that specifies runtime settings for the compiled function it creates.
SaveDefinitions is an option to Manipulate and related functions that specifies whether current definitions relevant for the evaluation of the expression being manipulated ...
SelectionCreateCell[notebook] copies the contents of the current selection in a notebook into a new cell. SelectionCreateCell[notebook, sel] sets the current selection after ...
SelectionEvaluate[notebook] replaces the current selection in a notebook with the result obtained by evaluating the contents of the selection in the kernel. ...
SessionTime[] gives the total number of seconds of real time that have elapsed since the beginning of your Mathematica session.
Sound
(Built-in Mathematica Symbol) Sound[primitives] represents a sound. Sound[primitives, t] specifies that the sound should have duration t.Sound[primitives, {t_min, t_max}] specifies that the sound should ...
StreamStyle is an option to StreamPlot, StreamDensityPlot, and related functions that determines the style to use for drawing streamlines.