Minor amendments

Region.md

@@ -1,3 +1,7 @@
+# Introduction
+
+Region objects hold a number of tiles, equal to `REGION_WIDTH * REGION_HEIGHT`. Each tile has a number of layers equal to `REGION_DEPTH`, as well as a flag indicating if that tile is solid or not. Regions are handled and processed by RegionPagerBase (and RegionPagerLua), and generally don't exist on their own.
+
 # Globals
 
 ```C++
@@ -26,6 +30,8 @@ Region(Region const&);
 
 This is Region's constructor. The first version takes an `x` & `y` value as a parameter, while the second version, the copy constructor, takes another `Region` as a parameter. Please note that the parameters `x` & `y` must be multiples of `REGION_WIDTH` and `REGION_HEIGHT` respectfully, otherwise an exception is thrown (multiples can be zero, or negatives).
 
+Please note that the default constructor is explicitly deleted.
+
 ```C++
 type_t SetTile(int x, int y, int z, type_t v);
 ```