@ keyword in xslt | @ keyword in xslt @ in xslt | using @ keyword in xslt

@ keyword in xslt
@ in xslt
using @ keyword in xslt
use of @ in xslt
xslt @ keyword

Answer :

Its a terminology in xslt.
It defines the attribute's value of the current node

for eg: Consider this xml tree:
<company>
<employee-details>
<employee id="0437" name="xyz">
<active>Yes</active>
</employee>
</employee-details>
</company>

To access the client id.
we use like

Here this tag will output - 0437
here the current node is employee.