As an example, assume that your model is as shown above. Options on this drop-down menu include File operations, including Open an existing file, Close the current file, Save the current file, SaveAs the current file under a new name, Rename the existing file, etc. These are the only ones we will use in this class, and cover a majority of civil engineering problems. Now to help him not run off into outer space in getting you an answer, he needs to have some limit beyond which you don't think he should bother checking - i.e. the bound of the sum of your answers. This statement is only required in the integer and allinteger routines.
Typical output is shown below.
Maximum number of variables is 150, including any slacks, surplus and artificials added by the system. Maximum number of constraints is 60. The solution space and simplex algorithm steps can be graphically displayed for two-dimensional problems. This only works using the simplex algorithm. Note also that slacks, surplus and artificial variables are added by the computer program if needed and NOT by the user.