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+# The `pst-ode` PSTricks package
+
+© 2012--`\today` Alexander Grahn
+
+https://github.com/agrahn/pst-ode
+
+This package defines `\pstODEsolve` for solving initial value problems for sets of Ordinary Differential Equations (ODE) using the Runge-Kutta-Fehlberg (**`RKF45`**) method with automatic step size adjustment.
+
+`\pstODEsolve[<options>]{<result>}{<output format>}{`*t*<sub>0</sub>`}{`*t*<sub>e</sub>`}{`*N*`}{`**x**<sub>0</sub>`}{`**f**`(`*t*`, `**x**`)}`
+
+The state vectors **x** found at *N* equally spaced output points between *t*<sub>0</sub> and *t*<sub>e</sub> are stored in the PostScript object `<result>`, formatted according to the second argument `<output format>`, as a long list of values. `<output format>` lists the quantities to be stored in `<result>`. The user can select from the elements of **x** and the integration parameter *t*.
+
+The initial condition vector **x**<sub>0</sub> and the right-hand side **f**`(`*t*`, `**x**`)` of the ODE system can be input in algebraic notation, if desired. RPN (Postfix) notation of PostScript can as well be used.
+
+`<result>` can be directly used as the `<data>` argument of `\listplot{<data>}` (package `pst-plot`) or `\listplotThreeD{<data>}` (package `pst-3dplot`).
+
+This material is subject to the [LaTeX Project Public License](http://mirrors.ctan.org/tex-archive/macros/latex/base/lppl.txt).