Controlling headers, and separating outputs by commas.
To omit all headings and text (while retaining the numbers) for segments and rays click on ‘no headers’ on the ‘segments and charges’ sheet. This puts nh (for 'no headings') in the first two spaces of the caption line -that is, the first line of the input data file.
To separate data by commas, which can be useful for processing data with an external program package, click on ‘separate by commas’ below the ‘no headers’ button. This puts nhc in the first three spaces of the caption line.