MATLAB Programming

5 Types of Functions
unless you declare them as global within the pertinent functions, or pass
them as arguments.
Calling Subfunctions
When you call a function from within an M-file, MATLAB first checks the file
to see if the function is a subfunction. It then checks for a private function
(described in the following section) with that name, and then for a standard
M-file or built-in function on your search path. Because it checks for a
subfunction first, you can override existing M-files using subfunctions with
thesamename.
Accessing Help for a Subfunction
You can write help for subfunctions using the same rules that apply to primary
functions. To display the help for a subfunction, precede the subfunction
name with the name of the M-file that contains the subfunction (minus file
extension) and a > character.
For example, to get help on subfunction mysubfun in file myfun.m, type
help myfun>mysubfun
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