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tabular*doesn't add space on the left as you used@you could use!from array package. (but the|are still misplaced unless you put them in their own column)tabularxcan adjust the width of the first column see the\hsize=1.5\hsizeexamples in the manual or this site.tabularynot over-expanding is a documented feature (there is some code on this site to over-ride that) because 999 times out of 1000 stretching a table to full width just makes it harder to read for no benefit so in my innocent youth I thought no one would ever want to do that.Arithmetic overflow.