<POST http://127.0.0.1:8000/cgi-bin/echo.cgi multipart/form-data
  <TextareaControl(blah=)>
  <TextControl(comments=)>
  <CheckboxControl(eggs=[spam])>
  <SelectControl(cheeses=[mozz, caerphilly, gouda, gorgonzola, parmesan, leicester, cheddar, mascarpone, curd, limburger, emmenthal])>
  <CheckboxControl(apples=[pears])>
  <CheckboxControl(whocares=[edam, gouda])>
  <RadioControl(spam=[spam, rhubarb])>
  <RadioControl(smelly=[on])>
  <SelectControl(favorite_cheese=[*cheddar, brie, leicester, jahlsberg])>
  <FileControl(<None>=<No files added>)>>
<html><head><title>Form submission parameters</title></head>
<p>Received parameters:</p>
<pre>
blah: 
favorite_cheese: cheddar
comments: Thanks, Gisle
</pre></html>

