The Expression Parser Step 4

Here we need to explain:

We told that the expression parser assumes that wat is really important is the result matrix of the whole expression. The intermediate matrices are not important and can be hidden. The same for the functions. Therefore in this step the parser only requests the name and package of the expression result matrix and of the function that produces it.
By default both the expression parser gives these name-packages to the final matrix and final function:

the name is the name of the template of the main function in the expression, "plus" in the example.
the package is either the one that was selected in the function tree when you started the expression parser or, if no package was selected, "default".

If there is already a matrix or function with the same name in the project, the name is changed using these rules.
You can change this name-packages clicking on the ... buttons beside them.
When you are satisfied you can click on the Next button to go to the step 5, the final step.