Editing Template:Hatnote templates documentation (section)

===Notes===
'''Do not use [[Wikipedia:Substitution|subst:]] with these templates''', as that will prevent: 
# propagating changes as the template is modified; and the
# ''[[Special:Whatlinkshere/{{NAMESPACE}}:{{PAGENAME}}|What links here]]'' (WLH) listing.

These templates are used in thousands of articles; therefore, changing the syntax could break thousands of articles. If you wish to create or edit a disambiguation or redirection template, first ask yourself the following questions:
# Is there already a template that will do this job? Since many disambiguation and redirection templates have already been created, first check: [[:Category:Disambiguation and redirection templates]].
# Do I really need a new template for this? Will it likely be used on any other articles or should I just use {{tl|Hatnote}} instead? Before creating a new template, see the [[Wikipedia:Template namespace|template namespace]] guideline.
# If I change the parameters around on an existing template, do I know what the result will be? Will it break existing uses of the template and if so, can I fix all of the errors? Before making any changes, see [[Wikipedia:Template sandbox and test cases|Template sandbox and test cases]].