To enable writing, open the file then save it to another compatible extension. Use File > Save As and select other formation different than the format previously assigned to file. Close everything and open it again. It should work now.
Perfect choice for professional design work, ideal for both print and the web.
Create diagrams in a manual mode or using free templates.
A vector graphics editor for making flowcharts, line drawings, org charts, etc.
To enable writing, open the file then save it to another compatible extension. Use File > Save As and select other formation different than the format previously assigned to file. Close everything and open it again. It should work now.