27.2.3 Editing Variable Values
Display a buffer listing names, values, and documentation of all
Change option values by editing a list of options.
`M-x list-options' displays a list of all Emacs option variables in
an Emacs buffer named `*List Options*'. Each option is shown with its
documentation and its current value. Here is what a portion of it might
("." "/usr/local/bin" "/usr/ucb" "/bin" "/usr/bin" "/u2/emacs/etc")
*List of directories to search programs to run in subprocesses.
Each element is a string (directory name)
or nil (try the default directory).
*Column beyond which automatic line-wrapping should happen.
Automatically becomes local when set in any fashion.
`M-x edit-options' goes one step further and immediately selects the
`*List Options*' buffer; this buffer uses the major mode Options mode,
which provides commands that allow you to point at an option and change
Set the variable point is in or near to a new value read using the
Toggle the variable point is in or near: if the value was `nil',
it becomes `t'; otherwise it becomes `nil'.
Set the variable point is in or near to `t'.
Set the variable point is in or near to `nil'.
Move to the next or previous variable.
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