# Using The Glossary The Glossary is a valuable resource. It provides information on the RETRO words. ## Example Entry f:+ Data: - Addr: - Float: FF-F Add two floating point numbers, returning the result. Class: class:word | Namespace: f | Interface Layer: rre Example #1: .3.1 .22 f:+ ## Reading The Entry An entry starts with the word name. This is followed by the stack effect for each stack. All RETRO systems have Data and Address stacks, some also include a floating point stack). The stack effect diagrams are followed by a short description of the word. After the description is a line providing some useful data. This includes the class handler, namespace prefix, and the interface layer that provides the word. Words in all systems will be listed as `all`. Some words (like the `pb:` words) are only on specific systems like iOS. These can be identified by looking at the interface layer field. At the end of the entry may be an example or two. ## Access Online The latest Glossary can be browsed at http://forthworks.com:9999 or gopher://forthworks.com:9999