is text will determine 
  the font size for that line (only one font size is allowed for each line but 
  multiple font styles can be combined in one line). If the text element Font 
  Step indicates By Size value, the engine will use the following table:</p>
<table border="1">
  <tr> 
    <td bgcolor="#FFFFCC">Font Size</td>
    <td bgcolor="#FFFFCC">Step cpi</td>
  </tr>
  <tr> 
    <td>&lt;8</td>
    <td>20</td>
  </tr>
  <tr> 
    <td>8</td>
    <td>17</td>
  </tr>
  <tr> 
    <td>9</td>
    <td>15</td>