<s>
The	O
rel	O
=	O
"	O
alternate	O
"	O
hreflang	B-General_Concept
=	O
"	O
x	O
"	O
link	O
attribute	O
is	O
a	O
HTML	B-Language
meta	O
element	O
described	O
in	O
RFC	O
8288	O
.	O
</s>
<s>
Hreflang	B-General_Concept
specifies	O
the	O
language	O
and	O
optional	O
geographic	O
restrictions	O
for	O
a	O
document	O
.	O
</s>
<s>
Hreflang	B-General_Concept
is	O
interpreted	O
by	O
search	B-Application
engines	I-Application
and	O
can	O
be	O
used	O
by	O
webmasters	O
to	O
clarify	O
the	O
lingual	O
and	O
geographical	O
targeting	O
of	O
a	O
Website	O
.	O
</s>
<s>
This	O
can	O
cause	O
a	O
lot	O
of	O
duplicate	O
content	O
or	O
near	O
duplicate	O
content	O
,	O
as	O
well	O
as	O
targeting	O
issues	O
with	O
users	O
from	O
search	B-Application
engines	I-Application
.	O
</s>
<s>
Search	B-Application
engines	I-Application
use	O
hreflang	B-General_Concept
to	O
understand	O
the	O
lingual	O
and	O
geographical	O
targeting	O
of	O
websites	O
and	O
use	O
the	O
information	O
to	O
show	O
the	O
right	O
URL	O
in	O
search	B-Application
results	I-Application
,	O
depending	O
on	O
user	O
language	O
and	O
region	O
preference	O
.	O
</s>
<s>
There	O
are	O
3	O
basic	O
scenarios	O
that	O
can	O
be	O
covered	O
with	O
hreflang	B-General_Concept
:	O
</s>
<s>
Hreflang	B-General_Concept
attribute	O
help	O
your	O
website	O
deliver	O
multiple	O
variations	O
of	O
the	O
website	O
in	O
different	O
languages	O
.	O
</s>
<s>
Hreflang	B-General_Concept
can	O
be	O
implemented	O
in	O
3	O
different	O
ways	O
.	O
</s>
<s>
The	O
hreflang	B-General_Concept
definition	O
is	O
done	O
by	O
creating	O
a	O
full	O
set	O
of	O
all	O
language	O
and	O
region	O
specific	O
versions	O
of	O
the	O
same	O
document	O
.	O
</s>
<s>
Hreflang	B-General_Concept
accepts	O
values	O
that	O
define	O
languages	O
ISO	O
639-1	O
and	O
countries	O
(	O
ISO	B-General_Concept
3166-1	I-General_Concept
)	O
.	O
</s>
<s>
The	O
hreflang	B-General_Concept
value	O
has	O
to	O
follow	O
the	O
standard	O
in	O
order	O
to	O
be	O
used	O
by	O
search	B-Application
engines	I-Application
.	O
</s>
<s>
RFC	O
5646	O
allows	O
language	O
script	O
variations	O
as	O
value	O
for	O
hreflang	B-General_Concept
.	O
</s>
<s>
x-default	O
is	O
a	O
reserved	O
hreflang	B-General_Concept
value	O
that	O
can	O
be	O
used	O
to	O
specify	O
a	O
default	O
version	O
for	O
a	O
document	O
.	O
</s>
<s>
Google	O
suggests	O
to	O
define	O
an	O
x-default	O
version	O
in	O
each	O
URL	O
set	O
,	O
which	O
will	O
be	O
shown	O
to	O
users	O
from	O
unspecified	O
regions	O
or	O
languages	O
in	O
search	B-Application
results	I-Application
.	O
</s>
<s>
Typically	O
,	O
in	O
multilingual	O
websites	O
,	O
the	O
TLD	O
(	O
https://www.example.com	O
)	O
will	O
get	O
the	O
x-default	O
value	O
in	O
each	O
URL	O
set	O
and	O
the	O
language	O
folders/subdomains	O
will	O
be	O
assigned	O
hreflang	B-General_Concept
values	O
.	O
</s>
