Man pages matching name tclvars in section 3tcl:

tclvars.3tcl.zh_CN	debian 10 / manpages-zh
tclvars.3tcl.zh_TW	debian 10 / manpages-zh
tclvars.3tcl.zh_CN	debian 11 / manpages-zh
tclvars.3tcl.zh_TW	debian 11 / manpages-zh
tclvars.3tcl.zh_CN	debian 12 / manpages-zh
tclvars.3tcl.zh_TW	debian 12 / manpages-zh