### Parse data packet
```erlang
-{ok, {Index, Groups}} = x_plane_data_raw:of_bin(XPlaneDataPacket),
+{ok, {64=Index, GroupsRaw}=DataRaw} = x_plane_data_raw:of_bin(XPlaneDataPacket),
```
### Access parsed data
+#### Raw
+
+At this stage, only the structure of the packet was parsed. No attempt at
+interpreting the values have been made:
+
```erlang
% Speeds are in group 3
-{3, Speeds} = lists:keyfind(3, 1, Groups),
+{3, Speeds} = lists:keyfind(3, 1, GroupsRaw),
{ VindKias
, VindKeas
, VtrueKtas
} = Speeds,
% Pitch roll and headings values are in group 17
-{17, PitchRollHeadings} = lists:keyfind(17, 1, Groups),
+{17, PitchRollHeadings} = lists:keyfind(17, 1, GroupsRaw),
{ PitchDeg
, RollDeg
, HdingTrue
} = PitchRollHeadings,
```
+#### Named
+
+Here we identify what each of the numbered groups mean in a given X-Plane
+version. Right now only X-Plane 10 is supported and I only identified 3 groups
+so far:
+
+| packet index | group index | group name |
+|--------------|-------------|----------------------|
+| 64 | 3 | `speeds` |
+| 64 | 17 | `pitch_roll_heading` |
+| 64 | 20 | `lat_lon_alt` |
+
+Unidentified groups (with index other than what is listed above) will be
+absent from the list of named groups (think of `x_plane_data_named:of_raw/1` as
+a filter), so you'll have to access their raw version, if needed.
+
+##### Identify
+```erlang
+{ok, {x_plane_data_v10, GroupsNamed}} = x_plane_data_named:of_raw(DataRaw),
+```
+
+##### Access
+```erlang
+-include_lib("x_plane_data_group_lat_lon_alt.hrl").
+-include_lib("x_plane_data_group_pitch_roll_heading.hrl").
+-include_lib("x_plane_data_group_speeds.hrl").
+
+...
+
+{speeds, #x_plane_data_group_speeds
+ { vind_kias = VindKias
+ , vind_keas = VindKeas
+ , vtrue_ktas = VtrueKtas
+ , vtrue_ktgs = VtrueKtgs
+ , vind_mph = VindMph
+ , vtrue_mphas = VtrueMphas
+ , vtrue_mphgs = VtrueMphgs
+ }
+} = lists:keyfind(speeds, 1, GroupsNamed),
+
+{pitch_roll_heading, #x_plane_data_group_pitch_roll_heading
+ { pitch_deg = PitchDeg
+ , roll_deg = RollDeg
+ , hding_true = HdingTrue
+ , hding_mag = HdingMag
+ }
+} = lists:keyfind(pitch_roll_heading, 1, GroupsNamed),
+```
+
Data format references
----------------------