0001-Kernel-Classes 0002-Numbers 0003-Basic-Data-Structures 0004-Sets-and-Dictionaries 0005-Graphical-Objects 0006-Text-Objects 0007-Windows 0008-Panes-and-Menus 0009-Files 0010-Alto-File-System 0011-IFS-File-System 0012-Events 0013-Primitive-Access 0014-Press-File-Support 0015-Compiler 0016-Paragraph-printing 0017-Picture-Editor 0018-Ethernet-Control 0019-Form-Path-Image 0020-FPI-Packages 0021-Ju