Macros in Scheme

Abstract

Although macros are even older than Lisp, Scheme has just become the first block-structured programming language to support a reliable macro system. This macro system is described in the appendix to the Revised 4 Report on the Algorithmic Language Scheme , which appeared in the previous issue of Lisp Pointers. This issue contains three more articles on the subject of macros in Scheme, counting the article you are reading. I wrote this as an introduction to the other two articles, because it is very hard to understand their purpose without some background on macros in Scheme.