The menus for all buttons and cell entries are activated by right clicking on them. Cells Rows Columns Tableau Tableau (upper leftmost button) Highlight Tableau - changes the background color of every cell in the tableau for emphasis; useful for classroom discussions while scrolling between tableaux for comparison. Wider - makes all the columns wider to accommodate integers with 9-14 digits (including negative sign); useful for large problems where such numbers frequently occur. Thinner - makes all the columns thinner to accommodate seeing on screen, without horizontal scrolling, problems with many variables; useful for network problems where, not only are there many variables, but also the coefficients are always 0, 1, or -1 because of total unimodularity. Fill Tableau with 0s - enters 0 in each cel of the tableau; useful for sparse problems. Copy/Paste Tableau - opens a large text area where you can freely select and copy or paste an entire tableau from your favorite word-processing program; after you paste a tableau, you can enter the dimensions of the tableau and click done; useful for large tableaux and tableuax generated from software. Copy Tableau to New Window - opens a new window with the current tableau in it (best if in a new tab instead --- see Browsers ); useful for experimenting with, and modifying tableaux (note that the labels on the browser tabs help keep track of which problem was generated from which other problem). New Tableau, Tableau Format - opens a new window (or tab) containing the original WebSim Launch page. New Tableau, Paste Format - opens a new window (or tab) with a text area into which you can paste an entire tableau from your favorite word-processing program (note that it shows an example of a tableau with three variables and two equality constraints -- just erase it); after you paste a tableau, enter the dimensions of the tableau and click done; useful for large problems and tableaux generated by other software. Convert to LaTeX - shows a large input box that contains the LaTeX code necessary to display the current tableau; select and copy the code into your favorite TeX editor; useful for creating homework and test problems or handing in homework solutions. Convert to Maple - shows a large input box that contains the Maple code necessary to display the current tableau; select and copy the code into Maple; useful for verifying solutions or solving large problems that WebSim fails on because of register overflow (numbers too large).