Websim uses the tableau format as used in the textbook
Linear Optimization: The Simplex Workbook
(note that the objective row differs slightly by negation from the tableau
format of Chvatal's
for example). Also, integer arithmetic is employed, making the
tableaux easier to read and digest, as well as making the connection
to determinants clearer.
Data can be entered one entry at a time or by pasting the entire tableau from Maple, TEX (LaTeX, etc), or any basic text editor. Resulting tableaux can be exported back to those softwares for running programs on, printing for homework, or modifying for other purposes. Tableaux can also be copied to other tabs for experimental and pedagogical use --- comparing different pivotting operations, designing interesting examples, constructing homework and test problems, and so on.