BL Scening Main map Navigation Mesh face IDs

[FoozleMcDoozle]

I was looking at the navigation mesh of the main map and was writing down navigation mesh face IDs, the list I got was

1- plains​

2- desert​

3-​

4- forest​

5- steppe​

6- bridges​

7- mountain​

8- lake coast​

9-​

10- ocean coast​

11- river​

12-​

13- desert mountains​

14- city/castle​

My question is, what are the purposes of the rest of the face IDs that I couldn't seem to find on the main map? Also, am I right in assuming that this is how movement speed is determined for parties on the main map?

 

[NPC99]

I was looking at the navigation mesh of the main map and was writing down navigation mesh face IDs, the list I got was

1- plains​

2- desert​

3-​

4- forest​

5- steppe​

6- bridges​

7- mountain​

8- lake coast​

9-​

10- ocean coast​

11- river​

12-​

13- desert mountains​

14- city/castle​

My question is, what are the purposes of the rest of the face IDs that I couldn't seem to find on the main map? Also, am I right in assuming that this is how movement speed is determined for parties on the main map?

Number 3 is snow, but isn't used on Main_map because permanent snow was replaced by a dynamic system, which changes snowfall seasonally.
Number 6 is shallow water as it can also be used for fords without bridges.
Number 8 is called lake.
Numbers 9 & 12 are not a usable navmesh terrain types. There were also gaps in the Warband system.
Number 10 is called water for sea/ocean. The Devs just haven't bothered to create unnecessary navmesh away from the coast.
Number 14 is called rural areas.

Only terrain types 1 to 6 are passible. The others block parties from entering those parts of the Navmesh.

The only difference between 8 & 10 or between 7 & 13 is the type of encounter battle scene they influence.