Leo is a unique, powerful computer program that you can use to organize, analyze and describe text and text files. Leo is a free program written by Edward K. Ream. For information about downloading Leo, see installation  tutorial in this series. Leo runs on Windows, Mac, or Linux.

Use Leo:

• to brainstorm a new project
• as a Personal Information Manager
• to add multiple outlines and commentary to any text file
• as a tool to facilitate a new kind of literate programming.

Because Leo is unlike other tools you may have used, a series of examples may be the best way to demonstrate what can be done with Leo.