A very useful function is Grid which gives the possibility of aligning the size and position of different modules on a given page. To enable the Grid feature in the editor, simply go to Presentation > Manage Layouts, set the "Grid size" to a value of your preference for all layouts in your lesson and after saving the changes enable the grid visibility and/or snapping in the editor's toolbar. The Grid option may be enabled/disabled and it does not influence the modules’ current position. The grid’s density is changeable and the modules' size and position are being aligned to the grid’s node. The minimum value of Grid is 2px.