Inline frames are very important to learn for web designing..
you can check out that how inline frame looks by running inline frame on your page.Syntax for inline frames is :
<iframe src="url" [attributes] > </iframe>
Possible attributes for iframe tag are:
1 : frameborder : set the frameborder value .you may select it as 0.
2 : scrolling : set "yes" if you wants scrolling and set "no" if you don't want scrolling.
3 : width : set the width of your iframe displayed.
4 : height : set the required height for you iframe.
5 : marginheight : set the height of margin required.
6 : marginwidth : set marginwidth as required.
7 : topmargin : set topmargin as required.
8 : leftmargin : set leftmargin as required.
now you can create your own iframe anytime you need. An iframe from my under construction site is shown below-