Building your diagram by using layers allows you a lot more flexibility - you can switch between different views of your diagram, group related elements and protect them from being modified when you work in a different layer. In this exercise, you'll create a diagram in a top layer, following an image 'template' that you paste into the background layer.
Some fonts are created to provide a good output for specific character sets, at the expense of the Latin character rendering in that set. In draw.io you can, attempt to, use any font you wish. Select a shape(s), select the text panel on the right, click the font name, select custom and enter the [...]