Just to protect you, myself and maybe the whole internet! In case of the pages with the MachMat background the following: (I can't speak for the other pages, since most stuff is made by others)

• All things published on these pages can and may be used any time and place for personal use.
• Everything on these pages may be published and printed as much as you like as long as there's no money charged and always a reference is made to these pages. In case of publishing I would like to get a copy.
• I cannot and will not take any responsibility for any damage (personal or to property) done by things published on any of ALL the pages published on the MachMat site.