In this example I have placed 6 windows in a wall and applied the Dimension Marker = “W Marker 16”.Now open any relevant section / elevation on which you want to display the window numbering. Then open the Label Tool > “Label Default Settings” window.Select “Window Tool” > “Curtain Wall DW Label 16”. Change the Marker Geometry to suite your needs. Click “OK” to close the window. Select all windows in the elevation by selecting the Window Tool and Ctrl + A (Win) or Command + A (Mac). Open the “Window Default Settings”.Under the tab “Listing and Labeling” check the box “Label Window”. Click “OK” to close. You should now see the window markers on elevation. Please note that you can adjust the position of the markers.