Syntax clarity on function

Question

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I have a script that goes like:

The script name is also ManageX. It doesn't look like there is any input or output. Why do we need this function here then, I wonder?

function ManageX
if 
end
if 
end

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Walter Roberson 2020-7-18

When you use a function instead of a script, there are more opportunities for optimization
When you use a script instead of a function, the entire workspace of the caller of the script is right there, and any changes you make to variables inside the script potentially affect the caller. The script needs to be careful not to accidentally affect the caller in ways the caller is not expecting