</dl>

<dl>
<dt><u>Function:</u> <b>openw_binary</b><i> (<var>file_name</var>)</i>
<a name="IDX2527"></a>
</dt>
<dd><p>Returns an output stream of 8-bit unsigned bytes to write the file named by <var>file_name</var>.
</p>
</dd></dl>

<dl>
<dt><u>Function:</u> <b>opena_binary</b><i> (<var>file_name</var>)</i>
<a name="IDX2528"></a>
</dt>
<dd><p>Returns an output stream of 8-bit unsigned bytes to append the file named by <var>file_name</var>.
</p>
</dd></dl>

<dl>
<dt><u>Function:</u> <b>read_binary_matrix</b