Displays the names of all defglobals. This function has no return value.
Syntax
(list-defglobals [<module-name>])
If <module-name> is unspecified, then the names of all defglobals
in the current module are displayed. If <module-name> is
specified, then the names of all defglobals in the specified module
are displayed. If <module-name> is the symbol *, then the
names of all defglobals in all modules are displayed.