zA-Z.-_]): 
  <input type="text" name="basefilename" value="changeThisToSomethingUnique">
  <br>
  <br>
  colorAlg:
<select name="colorAlg">
  <option value="simplest" selected>Simplest</option>
  <option value="simplest2">Simplest2</option>
  <option value="addmore">Need to add more color algs</option>
</select>
  <br>
  <br>
  width:
  <input type="text" name="width" value=10>
  <br>
  <br>
  height:
  <input type="text" name="height" value=10>
  <br>
  <br>
  cReal:
  <input type="text" name="cReal" valu