### 4.6 Solve statement

- Note:
The solve statement is optional and can be used only once. If no solve
statement is used, one is assumed at the end of the model section.

The solve statement causes solving the model, i.e. computing numeric
values of all model variables. This allows using variables in statements
below the solve statement in the same way as if they were numeric
parameters.

Note that variable, constraint, and objective statements cannot be used
below the solve statement, i.e. all principal components of the model
must be described above the solve statement.