browser position chrY:104002-867875
track name="chromosomeY" description="chromosome Y" visibility=2 color=0,180,0 useScore=1
chrY	293529	867875	250388	450
chrY	104002	239292	280673	450
chrY	732030	744392	287905(3/3)	950


browser position --> it's just the position initially displayed (if you don't write anything, the most recently setting position will be displayed; then you can move from this position to the interesting position)
track name --> name
description --> not necessary
color --> indicates that the personal track data (track name, region IDs, etc...) are highlighted in green color
useScore=1 --> indicates that the user will set a color score to display the different features in different shades of grey (white-grey-black). If you wrote just "useScore=1" the browser will give automatically a shade of grey to each features: if you want display all your features in just two colors (for example for dividing all the features in two groups), you can write a specific number (es. 450 = grey) near to the regions which belong to one group, and similarly you can write another number (950 = black) near to the regions which belong to the other group.

Regions:    CHR	 START	END  ID(region-name)  ColorScore