Here is a cool HTML tip for ordered lists created using <OL> HTML tag.

The TYPE attribute of <OL> list determines which kind of bullet will be used for listing elements.

We can use three types of bullets for the <OL> lists - Alphabet, Roman numerals and numbers/digits.
Take a look at the code below:

<OL TYPE="1">
<LI>Item 1</LI>
<LI>Item 2</LI>
<LI>Item 3</LI>
</OL>

The TYPE attribute has been set to 1, Arabic numerals (digits). This is the default and you don't need to specify it.
The above code is rendered in a browser as:

1. Item 1
2. Item 2
3. Item 3

To change the bullets to roman numerals, the TYPE attribute needs to be set to i (lowercase alphabet i) or I (uppercase alphabet I). Let us check these out.

<OL TYPE="i">
<LI>Item 1</LI>
<LI>Item 2</LI>
<LI>Item 3</LI>
<LI>Item 4</LI>
<LI>Item 5</LI>
<LI>Item 6</LI>
<LI>Item 7</LI>
<LI>Item 8</LI>
<LI>Item 9</LI>
<LI>Item 10</LI>
<LI>Item 11</LI>
</OL>

<OL TYPE="I">
<LI>Item 1</LI>
<LI>Item 2</LI>
<LI>Item 3</LI>
<LI>Item 4</LI>
<LI>Item 5</LI>
<LI>Item 6</LI>
<LI>Item 7</LI>
<LI>Item 8</LI>
<LI>Item 9</LI>
<LI>Item 10</LI>
<LI>Item 11</LI>
</OL>

Another attribute, though you may not encounter it often, is START. It takes a number as value and this specifies the number (or alphabet) with which the list would start.

<OL TYPE="1" START="4">
<LI>Item 1</LI>
<LI>Item 2</LI>
<LI>Item 3</LI>
</OL>

is rendered as:

4. Item 1
5. Item 2
6. Item 3

<OL TYPE="A" START="10">
<LI>Item 1</LI>
<LI>Item 2</LI>
<LI>Item 3</LI>
</OL>

is displayed as:

10. Item 1
11. Item 2
12. Item 3