[Dtiled] Unfamiliar terms and trouble using it for Dgame

[Jack via Digitalmars-d-learn]

Greetings!

I've been using Dgame for quite a while now and I have been 
learning quite a lot from using playing with it. Then I found 
Tiled that's a tool to draw tilemaps, and DTiled to implement it.

Link [ http://code.dlang.org/packages/dtiled]

I've spent about an hour in order to make it work in Dgame, 
basing my code in the examples, and I have a bit of trouble in 
using it, since I am just a newbie.

I've learned about templates, and all the other doodads, but I 
have trouble translating the tutorial code in loading the map to 
work with Dgame.

Can someone help me understand the code? I can't wrap my head 
around it.