There must be no more than one document record per system file. Document records must follow the variable records and precede the dictionary termination record.
struct sysfile_document
{
int32 rec_type;
int32 n_lines;
char lines[/* variable length */][80];
};
int32 rec_type;int32 n_lines;char lines[/* variable length */][80];n_lines.
Lines shorter than 80 characters are padded on the right with spaces.