4. I was wondering if anyone had any pointers on improving performance and reducing memory usage with natural tables. Are there particular options or settings to avoid, and so on?  I'm using Perl scripts to generate the ConTeXt code, so tend to output many setupTABLE commands.  I have some tables which can take a minute or two to render for one page, and might have a document with 15 pages, so it takes some time.  I saw some recent postings regarding linetables; I did not use them initially given they did not seem actively used and natural tables provide all the features I need; but I would be willing to give them a try if I understood what limitations they might have relative to natural tables.