<s>
Training	B-Language
Center	I-Language
XML	I-Language
(	O
TCX	O
)	O
is	O
a	O
data	O
exchange	O
format	O
introduced	O
in	O
2007	O
as	O
part	O
of	O
Garmin	O
's	O
Training	O
Center	O
product	O
.	O
</s>
<s>
The	O
XML	B-Protocol
is	O
similar	O
to	O
GPX	O
since	O
it	O
exchanges	O
GPS	O
tracks	O
,	O
but	O
treats	O
a	O
track	O
as	O
an	O
Activity	O
rather	O
than	O
simply	O
a	O
series	O
of	O
GPS	O
points	O
.	O
</s>
