The document record, if present, has the following format:
int32 rec_type; int32 n_lines; char lines[][80];
int32 rec_type;
Record type. Always set to 6.
int32 n_lines;
Number of lines of documents present. This should be greater than
zero, but ReadStats writes system files with zero n_lines
.
char lines[][80];
Document lines. The number of elements is defined by n_lines
.
Lines shorter than 80 characters are padded on the right with spaces.