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I was looking into making a mouse acceleration driver and came across this page, which explicitly lists this as a use case for a lower-level class filter driver. I looked further and found this page where MOUCLASS.sys is listed, which seems like an exact match for this use case, however the page also mentions that only an upper-level filter driver may be used in combination with MOUCLASS.sys. To a newbie like me this seems like a direct contradiction. So what's the truth here?
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