NAM — Illegal Examples

The Sep 01 revision of the INS document (99-09-01) twice shows example
URLs (on page 3-4 and 3-7) that are illegal according to the grammar on
page 3-5. The example on page 3-4 reads

corbaloc:iiop://1.1@555xyz.com/Prod/TradingService

However, the grammar allows either the <iiop_default> string `//' or
the <iiop_prot_token> `iiop', but not both. A valid URL can therefore
never contain a <iiop_prot_addr> that starts in `iiop://'.

So what's correct, the example or the grammar?

Typo / Not an Issue