Each name shall be unset.

the shell shall unset it
and remove it from the environment.

Unsetting shall not be considered an error.

The unset shall support the Base Definitions.

Note that unset should not be
misinterpreted.

Unset the functions

favor the standard

retain historical practice.

The System used one name
without options

and there was no confusion.


Found poem (erasure) from the Linux Man Pages.

Complete text at:
https://man7.org/linux/man-pages/man1/unset.1p.html