HTML 4.10: Legal ranges for Percentages?

Hi there,

I just noticed that the HTML 4.01 spec doesn't say anything about the legal 
values for Percentage lengths.  I assume they have to be positive integers 
but do they have to be less than or equal to 100?  The answer may be 
different in different contexts, I suppose (e.g., directly inside the BODY 
versus inside a TABLE).  Some browsers allow values greater than 100, as 
far as I can see (e.g., Internet Explorer for IMG widths and heights) and I 
don't see any harm in that.

I checked the errata but I didn't see anything on this -- maybe worth a 
Clarification (but maybe not ;-).  I haven't checked other versions of 
HTML, nor CSS, SMIL etc.

Thanks,
Hugh Greene.