Xara :: Setting Zero White Space Between Series Of Graphics

I quite often want to have a series of graphics lined up horizontally or vertically with no space between them, so I can use them as one image. Evenly distributing white space doesn't work because depending on the positions of the two end images they either overlap or there is white space between them.

The Serif DrawPlus alignment options has an option for evenly distributing (like Xara), but also has the option of specifying the number of pixels of white space ('spacing), with negative, zero and positive values.