Defines the type of field declared in the schema.

<SimpleField>
<name>Population<name>
<type>int<type>
</SimpleField>

Values
The possible range of values for fields are:

* uint
* short
* ushort
* float
* double
* bool
* string

* wstring (This is wide string, which is UCS2 unicode)
* sharedstring
* sharedwstring
* Vec2f (A two-dimensional vector float)
* Vec3d (A three-dimensional vector double)
* icon

Interests the last types samples. Maybe you help with its?
Vec3d - very interests to use.