This should be the title of the page

level 2

level 3

level 4

level 5

level 6

Some lists

Some numbers: 1+1=2 < 3
The use of paragraphs is mandatory.
Useful information (if you want to jump ahead click here)

html validator: http://validator.w3.org
CSS validator:: http://jigsaw.w3.org/css-validator/

Example

Here's a line.

Lists

Rational numbers
1. Integers
2. Fractions
Irrational numbers

Roman numerals:

Learn everything.
???
Profit!

Tables, definitions

Here are some definitions

BME: Budapest University of Technology and Economics
TTK: Faculty of Natural Sciences

An example for a table:

This is the first column	This is the second
a	b
2 wide cell
c	d
c	d

The truth table of AND.

AND
	1	0
1	1	0
0	0	0

Inserting a picture

If we don't specify a size for the picture, the actual size of the picture will be used

Local reference to the picture:
This is a joke.

The same but wider

This uses a global reference: Smaller.

This is a link:

Validator. Here you can check if your webpage is W3C valid or not.

Source code

Writing anything between < pre > and < /pre > is manual formatted. This is a Maple code:

> l:=[]: 
  for i from 1 to 5 do 
   x:=(rand() mod 90) + 1: 
   while member(x,l) do 
    x:=(rand() mod 90) + 1: 
    printf("%d ",x): 
   end do: 
  l:=[op(l),x]: 
  end do: 
  l;