TYPO3 SEO friendly page title

Sometimes your current page just displays its title and preceeded by the website name. That might be not enough to find that page in a whole tree of similar ones. I needed to have a page title starting with the current leave back to nearly the root name:

TypoScript constant:

titlepfx = My website name:
titlesep = «

TypoScript setup:

config.noPageTitle = 2

lib.pagetitle = COA
lib.pagetitle {
  stdWrap.noTrimWrap = |<title>{$titlepfx} |</title>|
  10 = HMENU
  10 {
    special = rootline
    special.range = 1|-1
    special.reverseOrder = 1
    includeNotInMenu = 1
    1 = TMENU
    1.NO = 1
    1.NO.doNotLinkIt = 1
    1.NO.allWrap = | {$titlesep} ||*|| {$titlesep} ||*||
    1.NO.stdWrap2.noTrimWrap = | | |
  }
}

page {
  headerData {
     2 < lib.pagetitle
  }
}