allout-passphrase-hint-string is a variable defined in `allout.el'.
Its value is

  • Automatically becomes buffer-local when set.
  • This variable is obsolete since 23.3;
    use `allout-passphrase-hint-string' instead.
  • This variable is safe as a file local variable if its value
    satisfies the predicate `stringp'.

Variable used to retain reminder string for file's encryption passphrase.

See the description of `allout-passphrase-hint-handling' for details about how
the reminder is deployed.

The hint is retained as an Emacs file variable, as well as in the Emacs buffer
state, if file variable adjustments are enabled. See
`allout-enable-file-variable-adjustment' for details about that.