2PLOT: plot text - write text into a plot

Usage: plot text <x> <y> <text>

Print text at position (x,y). The alignment of the text with respect to
the reference position  depends on the current values of the plot
parameters align and rotate. The current values of the plot
parameters font, textsize, weight and angle define the font used to
write the text. In addition, the text may contain the following
embedded text commands:
  @T    Change font type to Times.
  @H    Change font type to Helvetica.
  @C    Change font type to Courier.
  @S    Change font type to Symbol.
  @b    Change to boldface.
  @i    Change to italics.
  @^    Start a superscript.
  @v    Start a subscript.
  @N    Return to standard font, end sub- or superscript.
If the text contains multiple blanks, it must be enclosed in double
quotes. Double quotes that are part of the text must be preceded by a
backslash.