CONTRIBUTE: Small updates

CONTRIBUTE

@@ -3,15 +3,18 @@
 The text below explains the rules for participating in Org mode
 development.
 
-* Main rules
+* Main contribution rules
 
-1. The master git repository is hosted publicly at orgmode.org.  Anyone
-   can get a clone of the current repository state using the command
+1. The master git repository is hosted publicly at [[https://orgmode.org][orgmode.org]].
+
+   Anyone can get a clone of the current repository state using the
+   command
 
    : git clone https://code.orgmode.org/bzg/org-mode.git
 
-   Having a clone is sufficient to start hacking and to produce patches
-   that can easily and consistently be applied to the main repository.
+   Having a clone is sufficient to start hacking and to produce
+   patches that can easily and consistently be applied to the main
+   repository.
 
 2. People who are interested in participating to the Org mode
    development can do so by sending patches to this address:
@@ -19,8 +22,8 @@ development.
    : emacs-orgmode@gnu.org
 
 3. An interested developer can also request push access to the central
-   repository by creating an account on code.orgmode.org and by sending
-   her/his user info to the maintainer.
+   repository by creating an account on code.orgmode.org and by
+   sending her/his user info to the maintainer.
 
    After you have been added as a user with push privileges, clone the
    repository through ssh using
@@ -33,28 +36,31 @@ development.
    - Org mode is part of GNU Emacs.  Therefore, we need to be very
      conscious about changes moving into the Org mode core.  These can
      originate only from people who have signed the appropriate papers
-     with the Free Software Foundation.  The files to which this applies
-     are:
+     with the Free Software Foundation.  The files to which this
+     applies are:
 
      - all *.el files in the lisp directory of the repository
      - org.texi, orgcard.tex in the doc directory
      - the corresponding ChangeLog files
 
    - Before making any significant changes, please explain and discuss
-     them on the mailing list [[mailto:emacs-orgmode@gnu.org][emacs-orgmode@gnu.org]].
+     them on the mailing list [[mailto:emacs-orgmode@gnu.org][emacs-orgmode@gnu.org]].  
 
      This does obviously not apply to people who are maintaining their
-     own contributions to Org mode.  Please, just use the new mechanism
+     own contributions to Org mode. Please, just use the new mechanism
      to make sure all changes end up in the right place.
 
+     We value a nice tone in our discussions: please check and respect
+     the [[https://www.gnu.org/philosophy/kind-communication.en.html][GNU Kind Communications Guidelines]].
+
    - Org mode no longer uses ChangeLog entries to document changes.
      Instead, special commit messages are used, as described in the
      `CONTRIBUTE' file in the main Emacs repository.
 
    - Among other things, Org mode is widely appreciated because of its
      simplicity, cleanness and consistency.  We should try hard to
-     preserve this and ask everyone to keep this in mind when developing
-     changes.
+     preserve this and ask everyone to keep this in mind when
+     proposing changes.
 
 * The contrib/ directory
 
@@ -75,3 +81,7 @@ file into the Org mode core.  This means they will be moved up to the
 root directory and will also eventually be added to GNU Emacs git
 repository.  The final decision about this rests with the maintainer.
 
+* Org maintainance
+
+Org maintainance is explained on Worg: see [[https://orgmode.org/worg/org-maintainance.html][org-maintainance]].
+