[Zope] Limited file size editing...

Just curious... I've seen several times on this list people pointing out that the limit on the size of files you can edit in Zope via the web interface is a result of your browser. The sizes I recall were somewhere in the vacinity of 64K. I currently have a 470K file open for editing in Netscape 4.75 (under Linux). What are the limits on various browsers? Ignore me if you think this is too far off topic.... Curtis.