Man pages matching name tcl in section 3tcl:

Tcl.3tcl.pl	debian 10 / manpages-pl-dev
Tcl.3tcl.en	debian 10 / tcl8.6-doc
Tcl.3tcl.en	debian 11 / tcl8.6-doc
Tcl.3tcl.en	debian 12 / tcl8.6-doc