Grid is a very useful function that gives the possibility of aligning the size and location of different modules on a given page in the Editor.
To enable the Grid feature in the editor, it is enough to go to Presentation -> Preferences and check the “Use grid” box. It is also possible to define the grid size in pixels.
The Grid option may be enabled/disabled and it doesn’t influence the modules’ current location. The grid’s density is changeable and the module’s size and location is being aligned to the grid’s node.