/usr/share/man/man3/TkX_Main.3tclx.gz is in tclx8.4-doc 8.4.1-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man3/TclXInit.3tclx.gz
/usr/share/man/man3/TclXInit.3tclx.gz