Each scores 10

1. What is TextColor and TextBackGround for ?
   
2. List the value accepted as TextColor parameter with its color !
   
3. The same as number 2, but for TextBackGround.
   
4. How can we switch between text modes ?
   
5. Mention at least three values that is accepted for changing text modes.
   
6. How would it be if we specify X and Y parameter in GotoXY exceeds the screen resolution ?
   
7. Explain shortly all about text modes in PC !
   
8. Why must we add Delay between Sound and NoSound ?
   
9. If we omit NoSound statement, what will happen ?
   
10. How was the formula to assign colors in TextAttr ?