how to update label log in/log out from local.xml of customer.xml

I want only updating lable Log in to Sign In of customer.xml file. How can it possible from local.xml

<customer_logged_out>
    <!---<reference name="right">
        <block type="customer/form_login" name="customer_form_mini_log开发者_JAVA百科in" before="-" template="customer/form/mini.login.phtml"/>
    </reference>-->
    <reference name="top.links">
        <action method="addLink" translate="label title" module="customer"><label>Log In</label><url helper="customer/getLoginUrl"/><title>Log In</title><prepare/><urlParams/><position>100</position></action>
    </reference>
    <remove name="wishlist_sidebar"></remove>
    <remove name="reorder"></remove>
</customer_logged_out>

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Don't use the top links. Open app/locale/en_US/Mage_Customer.csv, and find the line that says

"Log In", "Log In"

Change it to:

"Log In", "Sign In"

You're done! Hope that helps!

Thanks, Joe

---

Go to

System->Configuration->Developer->Translate Inline->Enable for Frontend

Set Yes,save it.Open your frontend.You will see book like icon many places.Click that icon near login text,a pop up will appear.Change the login to sign and submit.Refresh the page and you can see the result.Dont forget to disable translate inline after you have made changes.

This is an another way of changing text.