Interactive manipulation of R expressions Twiddler is an interactive tool that automatically creates a Tcl/Tk GUI for manipulating variables in any R expression. See the documentation of the function twiddle to get started. Software Depends: R (>= 2.10.0), tcltk Oliver Flasch <oliver.flasch@fh-koeln.de> Oliver Flasch, Olaf Mersmann GPL-2 2010-12-07 application/tgz http://CRAN.R-project.org/package=twiddler