CREATING LISTS IN HTML:
Attributes
This element also accepts the global attributes.
compact Deprecated Non-standard
      This Boolean attribute hints that the list should be rendered in a
      compact style. The interpretation of this attribute is browser-specific.
      Use CSS instead: to give a similar effect as the compact attribute, the
      CSS property line-height can be used with a value of 80%.
reversed
      This Boolean attribute specifies that the list's items are in reverse
      order. Items will be numbered from high to low.
start
      An integer to start counting from for the list items. Always an Arabic
      numeral (1, 2, 3, etc.), even when the numbering type is letters or
      Roman numerals. For example, to start numbering elements from the
      letter "d" or the Roman numeral "iv," use start="4".
type
      Sets the numbering type:
            a for   lowercase letters
            A for   uppercase letters
            i for   lowercase Roman numerals
            I for   uppercase Roman numerals
            1 for   numbers (default)
      The specified type is used for the entire list unless a
      different type attribute is used on an enclosed <li> element.
       Note: Unless the type of the list number matters (like legal or
       technical documents where items are referenced by their
       number/letter), use the CSS list-style-type property instead.
Usage notes
Typically, ordered list items display with a preceding marker, such as a
number or letter.
The <ol> and <ul> (or the synonym <menu>) elements may nest as deeply as
desired, alternating between <ol>, <ul> (or <menu>) as needed.
The <ol> and <ul> elements both represent a list of items. The difference is
with the <ol> element, the order is meaningful. For example:
      Steps in a recipe
      Turn-by-turn directions
      The list of ingredients in decreasing proportion on nutrition information labels
To determine which list to use, try changing the order of the list items; if the
meaning changes, use the <ol> element — otherwise you can
use <ul> otherwise, or <menu> if your list is a menu.