How to Testrict Maximum Characters in tabular form

How can I restrict user for maximum character length in tabular form ? in master forms we can define maximum character lenght by using option "Maximum width"
Thanks,
Suhaib

Andy,
I've tried to put the following in my "Element Attributes" of a tabular form "text" element:
maxlength="5" onChange....
A test of the tabular form does not restrict character entry to 5 characters. The page source actually shows both maxlength="2000" and maxlength="3' for the input type tag. It looks as if the first maxlength is used and the maxlength that I added is ignored. It's curious that a tabular form element does not have a "maxlength" attribute to set like a non-tabular form "text" element.
Any suggestions on what else to try?
Alex.

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