A process for cutting out designs that are larger than the cut area of the tool. A large piece of material is broken up into multiple tiles--each the size of the cut area of the tool. Then, either the tool or the material is moved so that the cut area lines up with each tile in sequence--at which point the section of the cut corresponding to that tile is executed.
To cut a 24" x 48" design with a 6" x 8" tool would require 24 tiles (three rows of 8 tiles each) while it would require only 8 tiles with a 24" x 6" tool.
Toolpath Tiling is covered in detail in the VCarve user manual on page 239. A guide for tiling specifically with the handibot is available here.