Using Frames
Frames are used to partition the browser window, in order to display several documents simultaneously.
In addition, when a link in the frame is selected, the frame can modify either its content (in the same manner as when the window is not partitioned), or the content of another frame.
Frames are defined in a main HTML document. This document often acts as a container for calls to other documents, indicating where they are to appear. In the example below, the page is divided into two frames, and it calls the documents that are to appear in each frame.
<FRAMESET COLS="20%, *">
<FRAME SRC="1a831e8430fe0067_m.htm" NAME="menuframe">
</FRAME>
<FRAME SRC="1a831e8430fe0067_c.htm" NAME="contentframe">
</FRAME>
</FRAMESET>
The pages called can define new frames, which are nested inside the calling frame.