I found a .htaccess file in my Wordpress blog, what does this mean?

Code:

---

# -FrontPage-

IndexIgnore .htaccess */.??* *~ *# */HEADER* */README* */_vti*

<Limit GET POST>
order deny,allow
deny from all
allow from all
</Limit>
<Limit PUT DELETE>
order deny,allow
deny from all
</Limit>
AuthName linksku.com
AuthUserFile /home/linksku1/public_html/_vti_pvt/service.pwd
AuthGroupFile /home/linksku1/public_html/_vti_pvt/service.grp

---

I have no idea what this does, I doubt it came with WordPress. Can someone briefly explain to me what this means?