Example 3 in the OSLC Core Overview is wrong:

Example 3: Example URL with oslc.prefix
http://example.com/bugs/4242?oslc.prefix=foaf=&oslc.properties=foaf:lastName,...

It omits the required Uri_ref_esc for foaf.
It should be:

Example 3: Example URL with oslc.prefix
http://example.com/bugs/4242?oslc.prefix=foaf=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2F&oslc.properties=foaf:lastName,...