A LaTeX implementation of a combined FIFO Stack modified from the existing stack package by Benjamin Bayart.

The package renames the original’s \Push and \Pop commands \FSPush and \FSPop, and which work on the top/end of the FIFO/Stack), and adds the ability to \FSUnshift and \FSShift from the the bottom(front) of the FIFO/Stack.

The author is Stephen Gaito. The package is Copyright © 2014 Stephen Gaito.