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glossary: clarify description of HEAD

HEAD on a branch does reference a commit via the branch ref it refers to.
The main difference of a detached HEAD is that it _directly_ refers to
a commit.  Clarify this.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
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1 parent deaef1e commit 67393c5dc99eb61e76d2ea4df3dae49e8e93828d @gitster gitster committed Jun 23, 2011
Showing with 2 additions and 2 deletions.
  1. +2 −2 Documentation/glossary-content.txt
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4 Documentation/glossary-content.txt
@@ -170,8 +170,8 @@ to point at the new commit.
working tree>> is normally derived from the state of the tree
referred to by HEAD. HEAD is a reference to one of the
<<def_head,heads>> in your repository, except when using a
- <<def_detached_HEAD,detached HEAD>>, in which case it may
- reference an arbitrary commit.
+ <<def_detached_HEAD,detached HEAD>>, in which case it directly
+ references an arbitrary commit.
[[def_head_ref]]head ref::
A synonym for <<def_head,head>>.

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