allout-plain-bullets-string

allout-plain-bullets-string is a variable defined in `allout.el'.
Its value is

".,"

• Automatically becomes buffer-local when set.
• This variable is safe as a file local variable if its value
  satisfies the predicate `stringp'.

Documentation:
The bullets normally used in outline topic prefixes.

See `allout-distinctive-bullets-string' for the other kind of
bullets.

DO NOT include the close-square-bracket, `]', as a bullet.

Outline mode has to be reactivated in order for changes to the value
of this var to take effect.

You can customize this variable.