ATTR(tec_type)
ATTR(tec_dirtype)
ATTR(tec_direction)
+ATTR(imperial)
+ATTR(update_period)
+ATTR(tunnel_extrapolation)
ATTR2(0x00027500,type_rel_abs_begin)
/* These attributes are int that can either hold relative *
* or absolute values. A relative value is indicated by *
ATTR(ch_edge)
ATTR(zipfile_ref_block)
ATTR(item_id)
+ATTR(pdl_gps_update)
ATTR2(0x0004ffff,type_special_end)
ATTR2(0x00050000,type_double_begin)
ATTR(position_height)