Throw an error with the errorcode being code (a list), and the result string being message. An alternative to error.
Implemented in Tcl 8.6, from TIP#329 .
http://www.tcl.tk/man/tcl8.6/TclCmd/throw.htm
AMG: What are the advantages of [throw] over [error]?
PL: The commands are very similar, but there are some interesting differences, such as throw updating the value of the -errorstack member of the result options dictionary, which error doesn't. See Comparing error and throw.