Note: Whenever I refer to container it means the tag and its closing tag. For example, if I am talking about the <FONT> tag and I say container, I mean the stuff that is contained within <FONT> and </FONT>.
<CENTER>
Centers the text within its container.
<BIG>
Increases the font size by one for the text inside this container.
<SMALL>
Decreases the font size by one for the text within this container.
<DIV> and <SPAN>
These are both container tags that are mostly used for referencing parts of the document in scripting languages or stylesheets. You dont really have to use them in HTML but its good to know if you are gonna learn any scripting language like JavaScript or VBScript and Style Sheets. In plain english, you can place anything you want inside the DIV or SPAN container, text, formatted text, images, or a mixture of all these. Then, the document knows that all the stuff under that DIV is grouped and acts together when some action is to be performed. The same for SPAN.
<H1> through <H6>
H refers to heading. H1 to H6 are a heirarchy of document heading levels. H1 has the largest font size and H6 the smallest. These are helpful when you want to put a heading on your page and you dont want to use the FONT tag cause its too long. So, for example,
<H1>Welcome</H1> would give this
Welcome
The following list shows the relative sizes of the headings.
H1
H2
H3
H4
H5
H6
<P>
Denotes a paragraph.
<PRE>
Sometimes when you feel tired of typing in those <BR> at the end of each line, you can use this container tag. All text in this container is preformatted, that is, it is printed out as is in the html code.
