One tool would be chosen as primary and the others reduced and simplified to conform to it, or they would be crudely patched together with ugly seams. Seamfully integrated tools would maintain the unique characteristics of each tool, through transformations that retained their individual characteristics. This would let the user brush some characters with the paint tool in some artful way, then use the text editor to ‘search and replace’ some of the brushstroked characters, and then paint over the result with colour washes. Interaction would be seamless as the features of each tool were “literally visible, effectively invisible”. Seamful integration is hard, but the quality of interaction can be improved if we let each tool ‘be itself