In order to accommodate a wide range of computer screen sizes and at the same time afford a reasonable amount of accuracy and convenience, the optimum scale for the graph has been selected where one screen pixel represents 5cm (approximately 2"). Where this is not sufficiently accurate then by right Mouse button clicking with the cursor focused upon the wall label the user may enter (or correct) precise wall length dimensions using keyboard numeric input.
The room plan scale may be increased in steps and reduced by clicking on the 'Zoom' icons (magnifying glasses) at the top of the room design form.