apache_note() is an Apache-specific function
which gets and sets values in a request's
notes table.
Parameters
note_name
The name of the note.
note_value
The value of the note.
Return Values
If called with one argument, it returns the current value of note
note_name. If called with two arguments, it
sets the value of note note_name to
note_value and returns the previous value of
note note_name.
If the note cannot be retrieved, FALSE is returned.
