Reuse Web Template properties: "Store in library" Button not existing?!

Hello,

following the instructions on http://help.sap.com/saphelp_nw04/helpdata/en/1f/37813b650cdc0be10000000a114084/content.htm

it is said that I should do the following to save and reuse the properties of a web template (not a web item):

"To save the properties of a Web template in a library, choose Save in Library in the lower section of the Web Item tab page."

But there is no such Button, Link or something else labelled with "Save in Library". Unforunately, there is not screenshot available in the online help, so I even have no idea how the screen SHOULD look like.

Can someone help or try this out and give me feedback? I almost believe that they describe something which just does not exist in the Web Application Designer.