This block's title will be changed to uppercase. Any other block with 'uppercase' in the subject or title will also be altered. If you change this block's title through the UI to omit the word 'uppercase', it will still be altered to uppercase as the subject key has not been changed.
The menu entry for this page is of type MENU_CALLBACK, so it provides only a path but not a link in the menu links, but it is the same in every other way to the simplest example.
