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-**Considerations before start**
-
-* Do you want to make a 48k game?
-* Do you have read about IM2 interruptions?
-* Do you know how ZX Spectrum paging works?
-
-**Drawing on the screen with SP1**
-
-Graphics are usually composed of pixel information (all pixels are stored as on or off) and color information that goes 
-in 8x8 blocks. You'll see that Attribute clash is present everywhere everytime two sprites with different INK appear 
-on the same 8x8 box, and that's why lot of games made heroes to be black and white with transparent background 
-(aka mask).
-
-There are two types of entities:
-1. User-Defined Graphics (UDGs) (cheap on memory usage). Basically, kind of replacing an 8x8 ascii character by your own 'draw'.
-2. Sprites (more memory usage). A computer graphic which may be moved on-screen and otherwise manipulated as a single entity.
-
-Usually, UDGs are more intended for background items (even if they move, but SP1 won't help to move them), but it will help 
-to repaint them if a sprite is on top of an UDG.
-
-Sprites are more intended for moving items, like the game hero, enemies, ...