The nodes host random snippets of information useful for those
who are developing file format related code: IO_ plugins, exporters, importers.
<p>
Most snippets are format-neutral and describe how the core represents some
aspect of the data. Example pcb files are included for all possible cases
of representation.

<p>
<table border=1>
<tr><th>node <td> example file <td> about
<tr><td> <a href="../poly_dev_ex"> poly_dev_ex </a> <td> yes
    <td> polygon examples
<tr><td> <a href="../print_coord"> print_coord </a> <td> no
    <td> how to print coords in a text format (avoiding rounding errors)
<tr><td> <a href="../old_pinshape"> old_pinshape </a> <td> yes
    <td> obsolate pin shapes (.pcb format extension)
<tr><td> <a href="../old_thermal"> old_thermal </a> <td> yes
    <td> old thermal bit layout; example on all available thermal shapes (works with the new bit values too)
</table>