New Features

New in Version 4.0:

• Completely rewritten symmetrization code using new operators :[ etc. Also can now do symmetrizations across a product of objects using symz().
• Many internal changes.

New in Version 3.5:

• New code to handle connections between various index-types, much more flexible than prevously.
• As of this version, the default build scripts rename nearly all internal function names and variables by prepending them with r10!-. Only names that are used directly by the user are unchanged. This manual still refers to the original names, as these are what actually appear in the source code.

• Various bug fixes.
• mkobjsafe switch; including objects in arguments to mkobj().

• Functions savenv(), restorenv() and related functions that allow the user to save and restore named REDUCE environments. A REDUCE environment consists of all algebraic assignments, let and match rules, and all defined operators.
• A Newman-Penrose package, still under development.

• mkobj() is the preferred way to create a new object, mktnsr() remains for backward compatibility.
• relaced use of # with _ in all names.
• function coords() now sets the coordinates.
• generic names, allowing the user to conveniently refer to the unweildly names required to support multiple metrics.
• mkscalar() routine removed, its funtionality is taken over by mkobj().