SingleLetterItalics is an option for Cell that specifies whether single-letter names should be displayed in italics.
Small
(Built-in Mathematica Symbol) Small is a style or option setting that specifies that objects should be small.
StopScheduledTask[obj] deactivates the task obj.
StreamPosition[stream] returns an integer that specifies the position of the current point in an open stream.
Streams
(Built-in Mathematica Symbol) Streams[] gives a list of all streams that are currently open. Streams["name"] lists only streams with the specified name.
Stub
(Built-in Mathematica Symbol) Stub is an attribute which specifies that if a symbol is ever used, Needs should automatically be called on the context of the symbol.
Top
(Built-in Mathematica Symbol) Top is a symbol that represents the top for purposes of alignment and positioning.
VertexList[g] gives the list of vertices for the graph g.VertexList[g, patt] gives a list of vertices that match the pattern patt.
Visible
(Built-in Mathematica Symbol) Visible is a notebook option which specifies whether the notebook should be explicitly displayed on the screen.
WindowFloating is a notebook option that specifies whether the window for the notebook should float on top of other windows when it is displayed on the screen.