The menus for all buttons and cell entries are activated by right clicking on them. Cells Rows Columns Tableau Cells (tableau entries) Pivot on Entry - performs an integer pivot on the cell; this entry becomes the basic coefficient for the resulting tableau. Highlight Entry - changes the background color of the cell for emphasis; useful for classroom discussions (highlight all basic coefficients, potential pivot entries, etc.). Add Row and Column After - adds a new row and new column after this cell; useful for adding new constraints (such as cutting planes, for example). Delete Row and Column - deletes this row and column. Make Entry 0 - enters 0 in cell (actually easier to simply type 0). Make Entry 1 - enters 1 in cell (actually easier to simply type 1).