Rtcl is a Tcl extension for executing code in the R[L1 ] programming language. R is a free version of Bell Labs' S language for statistical computing. Rtcl embeds an R interpreter into Tcl, and allows access to it via Tcl commands. Rtcl was written by Neil McKay, and is available from
http://www.eecs.umich.edu/~mckay/computer/Rtcl0.1.tar.gz