a table contains codes for consecutive decimally numbered pages and pages whose numbers contain hexadecimal digits . codes for all the pages having decimal units numbers are arranged in rows and columns such that a column contains codes for pages having a same units number , and codes for pages having a same tens number are in the same row . codes for pages having a hexadecimal units number are arranged in a continuation of the rows and columns , hexadecimal units being arranged in the columns under the corresponding decimal units .