Keywords in nu/TPU are integer constants used to aid in the portability of
programs and interface design. Keywords are a nu/TPU data type which evaluate to a
predefined integer constant which can’t be redefined but can be superseded (or
occluded) by local definitions. nu/TPU contains 1,314 keywords in 3
categories: TPU error messages, interface strings, and constants. For a complete list of
keywords, see Appendix B or use the SHOW (KEYWORDS) built-in. The nu/TPU error
message keywords all begin with ‘TPU$_’ and the EVE interface keywords begin
with ‘EVE$_’.
Keywords