I make extensive use of \startcombination
for my grid of images and am very happy with what it produces.
\startcombination[4*3]
{\externalfigure[http://ecx.images-amazon.com/images/I/81P31hUJh7L._SY606_.jpg][vhs]}{}
{\externalfigure[http://ecx.images-amazon.com/images/I/91nE4VCZenL._SL1500_.jpg][vhs]}{}
{\externalfigure[http://ecx.images-amazon.com/images/I/51QQSSXXYBL.jpg][vhs]}{}
{\externalfigure[http://ecx.images-amazon.com/images/I/51CQ9EKNZ6L.jpg][vhs]}{}
{\externalfigure[http://ecx.images-amazon.com/images/I/91HL7FIOiqL._SL1500_.jpg][vhs]}{}
\stopcombination
However, after filling an entire page with images, I have to create a separate \startcombination
on the next page to add more images. Is there an option or alternative directive that will allow me to just put all my images in a single one and have the typesetter use up however many pages it needs?