DOM

What is the meaning of this?

• X0 is here
• X1 is here
• X2 is here
• X3 is here
• X4 is here
• X5 is here
• X6 is here
• X7 is here
• X8 is here
• X9 is here

I am paragraph 0

I am paragraph 1

I am paragraph 2

I am paragraph 3

I am paragraph 4

I am paragraph 5

I am paragraph 6

I am paragraph 7

I am paragraph 8

I am paragraph 9