stext.RdWrites text in the margin along the sides of a plot.
The text to be written. See mtext for details.
An integer specifying which side to write the text on. See mtext for details.
A numeric specifying on which line to write on.
A numeric, often in [0,1], specifying the position
of the text relative to the left and right edges.
A numeric vector length two specifying the size of a
typical symbol.
A numeric specifying the character expansion factor.
Additional arguments passed to mtext.
Returns what mtext returns.
Internally mtext is used.