Updated Data model (markdown)

Data-model.md

@@ -44,6 +44,7 @@ Both `grid` and `pack` objects include data representing voronoi diagrams and th
 * * `pack.vertices.v`: `number[][]` - indexes of vertices adjacent to each vertex. Most vertices have 3 neighboring vertices, bordering vertices has only 2, while the third is still added to the data as `-1`
 
 ## Features data
+Features represent separate locked areas like islands, lakes and oceans.
 
 ### Grid object
 * `grid.features`: `object[]` - array containing objects for all enclosed entities of original graph: islands, lakes and oceans. Feature object structure:
@@ -97,8 +98,19 @@ World data is mainly stored in typed arrays within `cells` object in both `grid`
 
 # Secondary pack data
 Secondary data available as a part of the `pack` object.
-## Features
+
 ## Cultures
+Cultures data is stored as an array of objects with strict element order. Element 0 is reserved by the _wildlands_ culture. Object structure:
+* `i`: `number` - culture id, always equal to the array index
+* `base`: `number` - _nameBase_ id, name base is used for names generation
+* `name`: `string` - culture name
+* `origin`: `number` - origin culture id. Used to render cultures tree to show cultures evolution
+* `shield`: `string` - shield type. Used for emblems rendering
+* `center`: `number` - cell id of culture center
+* `code`: `string` - culture name abbreviation. Used to render cultures tree
+* `color`: `string` - culture color in hex (e.g. `#45ff12`) or link to hatching pattern (e.g. `url(#hatch7)`)
+* `expansionism`: `number` - culture expansionism modifier. Used mainly during cultures generation to spread cultures not uniformly
+
 ## Burgs
 ## States
 ## Provinces
@@ -109,5 +121,5 @@ Secondary data available as a part of the `pack` object.
 # Secondary global data
 Secondary data exposed to global.
 ## Biomes
-
 ## Notes
+## nameBases