If a mask edit position is optional, why is the user required to enter it before moving onto the next valid position? 

Example1:

<igtxt:WebMaskEdit ID="WebMaskEdit1" runat="server" InputMask="?0" />

• Optional Character & Required Digit
• You cannot tab into field and simply type the required Digit
  • you are REQUIRED to type the OPTIONAL letter (hmmm...)

Example 2:

        <igtxt:WebMaskEdit ID="WebMaskEdit2" runat="server" InputMask="99.99" />

• All digits optional, but decimal is part of mask
• You cannot simply type ".99"
  •  instead this will ignore the fact that you omitted the optional digits and you typed "."
  • This will  display "99."
• You cannot simply type "9.99"
  • instead this will ignore the fact that you omitted the optional digits and typed "."
  • This will display "99.9"

  The ajax control toolkit works properly with thier mask edit http://www.asp.net/ajax/ajaxcontroltoolkit/Samples/MaskedEdit/MaskedEdit.aspx

• On the MS control, when i type a decimal point, it takes me to the decimal position

Is there any property that changes the way this works?