Print A3 doc tiled accross two A4

This would be a OSX system feature available through the Printer dialog.

I know what you are talking about as you could do this in the classic Mac OS, but I do not seem to be able to find it at all in the current system.

I want to print it over two A4 pages using my A4 printer, eg so it is tiled across both pages

You can tile in the imaging model, but you need a method to move the origin of the co-ordinate system in the application and while I may be mistaken, I don't know that this app has that.

The origin of the co-ordinate system is bottom left in PostScript (top left in QuickDraw). To tile you tell the imaging system to set up a sub-origin imaging area within the main imaging area.

You can do a kind of tiling, though. If you have a larger paper format than you have a page format, or you have a smaller paper format for several larger pages, you can tell the system to print several pages on the same paper.

File > Print > scroll down from Copies & Pages to Layout > Pages per Sheet. The scaling for tiling and thumbnailing is set up automatically, so you can't set up a special origian for a subarea and selectively image that subsection in one-to-one scale.

/hh