Here is an example in which the margins are set first in the BODY tag, with a LEFTMARGIN of 1in and a RIGHTMARGIN of 5in.
 
Within this DIV (division) margins are set at LEFTMARGIN=2in and RIGHTMARGIN=4in.
 
An implicit paragraph inherits the same margins.
An explicit paragraph inherits the same margins.
 
A paragraph can contain its own margin settings that override those of the DIV.
 
Ending the P tag returns to the DIV's margins.
 
Ending the DIV returns to the BODY's margins.