And the markup to produce a logical tab order through this badly organized form is:
<FORM METHOD="POST">
<INPUT TYPE="SUBMIT" VALUE="Enter" tabindex="6">
What's your favourite colour?<BR>
Red <INPUT TYPE="CHECKBOX" NAME="CBVar1" VALUE="CB4" tabindex="3"><BR>
Green <INPUT TYPE="CHECKBOX" NAME="CBVar2" VALUE="CB5" tabindex="4"><BR>
Blue <INPUT TYPE="CHECKBOX" NAME="CBVar3" VALUE="CkB6" tabindex="5"><BR>
Company Name <INPUT TYPE="TEXT" NAME="Com" tabindex="2"><BR>
<INPUT TYPE="RESET" VALUE="Undo" tabindex="7">
<A HREF="form-alt.htm" tabindex="1">Skip the form to find accessible alternatives</A>.<BR>
</FORM>