[ns] Unecessary path in installation instructions?

[Matthias Budde]

Hi,

on completion of any allinone installation, you're ask to set a bunch of PATHs:

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IMPORTANT NOTICES:

[...]

(2) You MUST put /opt/ns2/ns-allinone-2.29/tcl8.4.11/library into your TCL_LIBRARY environmental
    variable. Otherwise ns/nam will complain during startup.

(3) [OPTIONAL] To save disk space, you can now delete directories tcl8.4.11
    and tk8.4.11. They are now installed under /opt/ns2/ns-allinone-2.29/{bin,include,lib}

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Isn't step 2 unnecessary? I forgot to do so and all worked fine for me. Also, in optional step 3 you're free to delete the folder you've set a path to before anyway...

-Matt