A dictionary may optionally have an associated string that describes its contents, called its file label. The user may set the file label with the FILE LABEL command (see FILE LABEL in PSPP Users Guide).
These functions set and retrieve the file label.
Returns dict’s file label. If dict does not have a label, returns a null pointer.
Sets dict’s label to label. If label is non-null, then its content, truncated to at most 60 bytes, becomes the new file label. If label is null, then dict’s label is removed.
The caller retains ownership of label.