[Swift-user] What does the mapper option padding do?

[Jonathan Margoliash]

Hello all,

I am new to the listhost and was wondering if this is the correct place to
ask questions about how Swift works. If so, my question is, what does the
mapper option padding do? I.e.

file inputs[] <simple_mapper; location=".", prefix="x", suffix=".mat",
padding=0>;

I couldn't find this discussed in the user guide on the Swift website.
Should I be looking for documentation elsewhere? Thanks for the help!

Jonathan
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