1614	 A Proposal for Definitions in ALGOL	 An extension to ALGOL is proposed for adding new data types and operators to the language. Definitions may occur in any block heading and terminate with the block. They are an integral part of the program and are not fixed in the language. Even the behavior of existing operators may be redefined. The processing of text containing defined contexts features a replacement rule that eliminates unnecessary iterations and temporary storage. Examples of definition sets are given for real and complex matrices complex numbers file processing and list manipulation.
