Tcl is a powerful, easy to use, embeddable, cross-platform interpreted scripting language.
versions
DebianStable includes Tcl 8.6.
DebianTesting includes Tcl 8.6.
DebianUnstable includes Tcl 8.6.
Debian-specific information
IRC Channel: #debian-tcltk on OFTC
General discussions and Maintainers field: <pkg-tcltk-devel AT lists.alioth.debian.org>
Debian Tcl/Tk Team - Teams/DebianTclTk
Bugs - Debian - BTS
Security Advisories - Debian - Security Bug Tracker
upstream specific information