Abstract: A computer-implemented method of re-ordering one or more of a plurality of drawing blocks on a slide of a user interface canvas is disclosed. The user interface canvas is stored in a graphics memory and displayed on an interface screen. The method comprises analyzing using a graphical processor memory elements in the graphics memory to identify a plurality of anchor positions for the plurality of drawing blocks and the slide, storing the identified anchor positions in the graphics memory, analyzing the identified and stored anchor positions to identify common elements from among the identified and stored anchor positions, and reordering at least one of the plurality of drawing blocks to a different position on the slide such that at least one of the anchor position of the re-ordered drawing block moves to a common element from among the identified and stored anchor positions.