void read(AzFile *file) {
AzTools::read_header(file, reserved_len);
pl_num = file->readInt(); /* 7/2/2015 */
pl_sz = file->readInt();
pl_step = file->readInt();
ptyp = file->readByte();
s_pl_type.read(file);
do_pl_simple_grid = file->readBool();
}
virtual void read(AzFile *file) {
AzTools::read_header(file, reserved_len);
s_activ_typ.read(file);
typ = file->readByte();
trunc = file->readDouble();
}