Tetra is a safe-language designed solely for BRiXhttp://brix-os.sf.net/?p0=info&p1=tetra added the iszero? method to types that support the zero_interface, finished the boolean type page, added common interfaces to the interfaces page, added the Print Manual link, extension list now includes virtual extensions, flags and keywords, added the Exceptions page and added an unfinished Environments page.http://brix-os.sf.net/?p0=info&p1=tetra renamed 'Crush' to 'Tetra' and redefined most of the language including its syntaxhttp://brix-os.sf.net/?p0=info&p1=tetra updated the introduction page *** all identifiers are case-insensitive *** removed "Case-insensitive Symbols" section *** updated the syntax page *** pointers will be removed from the language, see notes on pointers pagehttp://brix-os.sf.net/?p0=info&p1=tetra changed comments from ; to // and ;{...} to /*...*/http://brix-os.sf.net/?p0=info&p1=tetra added '\' back into the allowed characters for function and macro names *** added FOREACH-REV macro *** renamed CSET to SETQ, renamed 'constant unevaluated variables' page to 'quoted variables' *** updated constructors section on the types pagehttp://brix-os.sf.net/?p0=info&p1=tetra