Indicate whether the column has a variable length, fixed length or a padded length.
Traditional PRO/5 data formats are typically made up of variable-length character string and numeric columns that are terminated by the $0A$ line-feed character. The decimal equivalent of $0A$ is 10.
For existing record structures that contain several line-feed delimited columns containing substrings, define all but the last substring as fixed-length. Define the final substring in the record as variable-length, with a terminator of 10.
If a padded length is selected, specify the pad character in the Pad/Terminator box