I believe the "matter to" is what's generally known as a 'weasel clause'. You'll be able to in essence set everything you would like there...quite a bit of people will include things like some thing like "topic to favorable financing" or "subject matter to small business companion's acceptance" to offer https://gotartwork.com/Blog/discovering-panchakarma-in-sydney-a-holistic-path-to-healing-and-renewal/292409/