Tables are automatically rendered in the output. To set table and column width individually you can:

• Type <table 100%> or <xtable width= "100%"> to show your table on the whole page width.
• Type <table 33c%, 33c%, 33c%> or <xtable columnwidths= "33c%, 33c%, 33c%> to make three columns the same width.
• Type <table c%, c%, 50%> to set the width of the last column in a table with three columns.