How To Use DarcyLite (1) Download the single-piece zip file DarcyLite.zip from J.Liu's webpage: http://www.math.colostate.edu/~liu/code.html (2) Unzip the zip file to get a folder with the default name "DarcyLite"; (3) Get into folder "DarcyLite"; Run "setpath" (.m file) in Matlab environment; (4) Get into subfolder "project"; (5) Run "run_Darcy_WG_RectQ0Q0RT0" (.m file) or a similar file in Matlab environment; Observe graphics and numerical results in Matlab command and figure windows.