<li>`T=<i>ms</i>` - request timeout (default 5000~ms), in milliseconds
<li>`L=<i>bytes</i>` - limit response length (default 0 = don't limit). Applies to the head, body, or both combined, depending on the `H` and `B` flags
<li>`l=<i>bytes</i>` - limit the response buffer size (default 5000~B).
This can reduce RAM usage, however it shouldn't be set too small, as this buffer
is used for both headers and the response body.
</ul>
<li>`_url_` - full request URL, including `http://`. Port may be specified if different from :80,
and GET arguments may be appended to the URL if needed.
<li>`_body_` - optional, separated from `_url_` by a single line feed character (`\n`).
This can be used for POST and PUT requests. Note: the command may be truncated to the
maximum total length of 256 characters if too long.
</ul>
<p>The response has the following format: `\e^h;<i>status</i>;<i>options</i>;<i>response</i>\a`</p>
<ul>
<li>`_status_` - a HTTP status code, eg. 200 is OK, 404 Not found.
<li>`_options_` - similar to those in the request, here describing the response data.