<s>
The	O
Mozilla	B-Operating_System
Archive	I-Operating_System
Format	I-Operating_System
(	O
MAFF	O
)	O
is	O
a	O
legacy	O
Web	B-General_Concept
archive	I-General_Concept
file	I-General_Concept
format	O
that	O
was	O
provided	O
by	O
Firefox	B-Application
through	O
an	O
extension	O
,	O
used	O
to	O
store	O
one	O
or	O
more	O
web	O
pages	O
with	O
their	O
associated	O
audio	O
,	O
video	O
,	O
and	O
other	O
related	O
web	O
resources	O
to	O
a	O
single	O
file	O
.	O
</s>
<s>
Unlike	O
MHTML	B-Application
,	O
which	O
uses	O
MIME	B-Protocol
encoding	O
within	O
a	O
single	O
HTML	O
file	O
,	O
MAFF	O
compresses	O
the	O
page	O
into	O
a	O
ZIP	B-General_Concept
container	O
file	O
.	O
</s>
<s>
The	O
extension	O
supported	O
versions	O
of	O
Firefox	B-Application
from	O
2007	O
to	O
2018	O
but	O
not	O
later	O
,	O
and	O
there	O
are	O
no	O
plans	O
to	O
update	O
it	O
.	O
</s>
<s>
It	O
continued	O
to	O
be	O
supported	O
in	O
Cyberfox	O
and	O
Waterfox	B-Language
,	O
forks	O
of	O
Firefox	B-Application
that	O
try	O
to	O
keep	O
features	O
removed	O
from	O
Firefox	B-Application
like	O
the	O
traditional	O
extension	O
API	O
.	O
</s>
<s>
Browser	O
extension	O
WebScrapBook	B-Operating_System
(	O
with	O
assistant	O
PyWebScrapBook	O
)	O
,	O
available	O
for	O
Firefox	B-Application
57+	O
and	O
Chromium-based	O
browsers	O
,	O
supports	O
saving	O
and	O
opening	O
MAFF	O
files	O
.	O
</s>
<s>
Pale	B-Protocol
Moon	I-Protocol
extension	O
MozArchiver	O
,	O
a	O
fork	O
of	O
the	O
original	O
extension	O
,	O
provides	O
the	O
same	O
support	O
for	O
Pale	B-Protocol
Moon	I-Protocol
26.0	O
and	O
newer	O
.	O
</s>
<s>
Existing	O
files	O
in	O
the	O
discontinued	O
.maff	O
format	O
can	O
be	O
accessed	O
by	O
extracting	O
the	O
internal	O
folders	O
and	O
files	O
with	O
an	O
unarchiver	O
such	O
as	O
7-Zip	B-Language
.	O
</s>
<s>
as	O
ZIP-type	O
in	O
local	O
search	O
machines	O
(	O
like	O
DocFetcher	O
)	O
.	O
</s>
<s>
Pale	B-Protocol
Moon	I-Protocol
allows	O
.maff	O
files	O
to	O
be	O
opened	O
in	O
MS	O
Windows	O
.	O
</s>
