This is file format.html

And here is some ordinary text.

Heading level four

looks like the above.
This is a centered level five
heading, showing the extra ALIGN tag.

we can do quite a lot of typing, then put a break in here,
so the text flow is broken up.

If we didn't use the BR tag then text would just keep on flowing across the page. If the user changes the width of the browser window then the text adjusts accordingly.

Used sparingly a horizontal rule is a good separator.

Let us try some other changes. Here is some bold text, some Italicized text and some emphasized text. A fixed width font is selected with TT like this section of text.

If we would like to include some code we can make it look like this:
#include <stdio.h>
int main() {
printf("Hello World\n");
}

Perhaps an easier way is to use the PRE tag, like this:

#include <stdio.h>

int main() {
printf("Hello World\n");
}

Here is an example of an address:

Mr. Postman Pat
7 Posty Lane,
Greendale
Lancashire
Great Britain

This is a block quotation from
Macbeth, by William Shakespeare

Is this a dagger which I see before me, The handle toward my hand? Come, let me clutch thee:
I have thee not, and yet I see thee still.

Which I consider an outstandingly good play.