How to control the variable in emacs?

Question

The page 49 of org mode manual has the following comment.

"To limit tag inheritance to specific tags, or to turn it off entirely, use the variable org-use-tag-iheritance and org-tags-exclude-from-inheritance." 

It seems that I should set those variables to 1 or t inside emacs. Is this correct? If so, how can I do that?

Answer 1

M-x set-variable RET var RET value (from http://www.delorie.com/gnu/docs/emacs/emacs_478.html)

Answer 2

To configure these permanently, you can use (setq variable value) in your .emacs file. Alternatively, as these variables are both defined with defcustom, you can also use:

M-x customize-variable org-use-tag-iheritance
and M-x customize-variable org-tags-exclude-from-inheritance

to configure them either temporarily or permanently.