all_items               Return the list of all items
batch_extract           Extract a list of items from many GDX
extract                 Extract data from a gdx
extract.gdx             Extract parameter or variable data from the gdx
                        file
gams                    Run the GAMS executable
gdx                     GDX file
igdx                    GAMS sysdir locator (kept for backward
                        compatibility)
load_records            Eagerly load records for one or more symbols
write.gdx               Write a list of parameters / sets / variables
                        to a GDX
write2.gdx              Write parameters and sets to a gdx (alias of
                        write.gdx for backward compatibility)
