[TYPO3-english] question about template

[tom]

Hi,

...
  elements {
    BODY.all = 1
    BODY.all.subpartMarker = DOCUMENT_BODY

    HEAD.all = 1
    HEAD.all.subpartMarker = DOCUMENT_HEADER
    HEAD.rmTagSections = title

    TD.all = 1
  }...

For the above code, it is typoscript in template setup,
my question is: for the code "HEAD.rmTagSections = title", why we
should remove the title section from the template?

Tom