General Settings:

-To delete elements, double-click on them
-To modify elements you must be in the select mode
-To analyse a grillage, assign a suitable Major Grid Orientation to beams, and input out-of-plane loading (Z-direction)
-This application is still in development - use with caution!
-Structural software is not a replacement for the knowledge of structural design. The application should only be used by a trained, qualified and experienced engineer or for learning and training.