Cell's math by format - models  
After having entered the data required by the dialogue box, we can save this model for future needs.
Thus, we will not need to enter the same data many times.
To save a model, do as follows:
1.- Press the Create Model button. Two options will be displayed: to enter the model's name, and a brief description of the model.
2.- Finally, press the Save button, and the model will be saved.
If the model is successfully saved, the message displayed will be similar to the one below: