Redirection is useful if there is more than one name or term for the topic you are writing about. For example, an electrocardiogram is also known as an ECG. Confusion would arise if there were two differently namedpages with the same content about the same subject. Another scenario would be when you have a topic on a class of drugs and you want the individual drugs to point to that topic, (e.g. amoxicillin redirects to penicillins). For these situations one can create a redirect from one page to another.
To do this, place the following content (and nothing else!) on the page you wish to redirect from:
#REDIRECT [[Page to direct to]]
'Page to direct to' is the name of the topic you wish to direct to.