System Settings 
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23. Using 'System Settings' window you can:
1.General  set the height of the camera’s position relative to the floor  turn Undo/Redo mode on or off
 select antialiasing level (if your graphic card allows to do it): 'None' – turns antialiasing off; 'Default'  sets antialiasing level according to graphic card settings; 'aa2x'  antialiasing will work using 2x2 pixel matrix; 'aa4x'  antialiasing will work using 4x4 pixel matrix.
It is better to change antialiasing level before loading a project, because it is impossible to change antialiasing level when bump mapping or gloss are used in the project. Sometimes after you change antialiasing, it is necessary to adjust the gridlines. In order to do that you should use the 'Gridlines thickness' field.
Measuring system  choice of measurement system: Metric units  metric system of measures English units  english system of measures
Below you’ll see three images showing three different levels of antialiasing: none, aa2x, aa4x
2. Parameters for calculating the total number of tiles required (for tile coverings) By default, the number of tiles is calculated using the 'classical' method. If the tile is not whole, then depending on its area, it is considered part of the whole with rounding to the nearest upper boundary. I.e. if the tile is equal to, for example, 44% of the area of the whole, then it is rounded to 1/2 tile, if 57%  to 3/4 tile.
The 'Universal' method is more flexible in terms of settings. In this method, the rounding boundary is selected from 5% to 25%. That is, when calculating cropped tiles, the nearest rounding border can be every 5% (23% = 0.25 tiles, 27% = 0.3 tiles), 10%, 20%, 25%. The last value of the 'Universal' method (25%) practically coincides with the 'Classic' method. The 'Universal' method can be set for any tile of the project. You need to rightclick on the coverage (to the right of the project) and select the 'Properties' command. In this window, assign the calculation 'Universal' and set the settings. That is, each tile in the calculation can be calculated with its own accuracy. This can be convenient if the project has both tiles and mosaics. Mosaic can be used very optimally, but the 'classical' calculation gives an overestimated amount of this type of coating.
3. On the “Dimension settings” tab you could set the size dimension lines spacing and color, dimension font and font height:
