This book is the second volume in a series entitled The Modula-2 Software Component Library. Charles Lins' collection of reusable standard software components could be the basis for every programmer's software project in Modula-2. Components that are implementations of commonly used data structures are presented, along with a description of their functionality and efficiency. Moreover, the books provide the background necessary to tailor these components to the specific needs of any Modula-2 environment. For every Modula-2 programmer, this series of books could prove as useful and indispensable as the original language reference by Niklaus Wirth. This second volume introduces software modules for lists, queues, and deques.