If you have not explicitly specified them, Report-Writer calculates default settings for the right and left margins of the report, for the starting position and width of each column (for use with statements such as .tab and .right), and/or for the formats to use when printing columns. Report-Writer determines the default settings on the basis of an analysis of the other report formatting statements, which are performed after the report set up and page layout statements (such as .leftmargin), but before the first printing of the report.