Verify that the user agent ignores target names that do not start with an alphabetical character (a-z, A-Z)
Test for assertion 6.16-1

This is 6_16-BF-01c.html

When you click on this link, 6_16-BF-01f.html should load in THIS WINDOW, NOT in the window where 6_16-BF-01d.html is now. According to the spec, user agents must ignore target names that do not begin with an alphabetic character.