I would like to remove the [Global:Letter] tag on web collections that don't have it. My page titles are for example "Library - Letter B", eventually it could be: "Library: Letter B" with a colon. The problem is the collections that don't have any letter. Some of them are exported by a given number of pages, and therefore they don't have any [Global:Letter] tag. Their page titles become the collection name followed by a colon or a hyphen - without anything more.
It doesn't seem like there is any <!--IFLetter... tag. Is that right?