usage: tex2image 'latex code' filename.type

  The following options are accepted, defaults in [ ]:
    -X              x-resolution [144]
    -Y              y-resolution [144]
    --color         text color as LaTeX color name, grey percentage, "r,g,b",
                    or "c,m,y,k" all numbers are less than 1. [black]
    --pagecolor     page color defined as with --color. [white]

    --convert_args  arguments for the "convert" program [-transparent white]
    -a | --ask      ask before cleaning up temporary files

  If you specify options at the end of the command you may leave off the dashes
  for example:

     tex2image -X 300 -Y 300 '$ f_1(x) := 3x^2-2y $' f1.png
     tex2image '$ f_1(x) := 3x^2-2y $' f1.png X 300 Y 300

  WARNING: If using the second style, then you must provide latex code or -.

  If the 'latex code' is missing or is a single dash '-' then the program will
  allow you to enter multi-line input (which may include the LaTeX headers if
  you need to use some LaTeX packages). After entering your code press return
  and then ^D (control - d).
  Example:

  [dean@styx]$ tex2image - big_picture.png
  \documentclass{article}
  \usepackage{pstricks}
  \pagestyle{empty}
  \begin{document}
  ... lots of (probably pasted) tricky code ...
  \end{document}
  ^D