For LyX 2.3.0:

New

* Section 6.4: (French only) AGU journals
* Section 6.6: (French only) EGS journals


Modified (not German, not Japanese):

* Section 2.5: new material in item "Overfull hbox"
               new material in item "Underfull hbox"

* Section 3.2.1: 2nd alinea 'Child Document'
                 3rd alinea: document differences
                             between methods
                 5th alinea added

* Section 3.2.3: completely rewritten

* Section 3.5.3 (footnote): review of the \star\ documentation

* Section 4.1: correct menu name
               second alinea, correct menu name

* Section 3.1: introduce Biblatex

* Section 3.1.1: introduce Biblatex

* Section 3.1.2: rename title as 'Subdivided bibliographies'
                 and introduce Biblatex

* Section 3.1.3: rewrite almost completely

* Section 5.6.1: 1st alinea: review calling method
                 entry 'Built-in reverse search via SyncTeX':
                       a couple of details added

* Section 5.6.3: entry Okular: a few changes

* Section 6.1.3 (in sec. 6.1 A&A paper):
                             3rd alinea: add documentation of
                                  institute and email
                             suppress two additional methods

* Section 6.1.4: document the paragraph style Keywords

* Section 6.1.8: word changed

* Section 6.2.1: update version number

* Section 6.2.2: update class name
                 suppress two phrases
                   
* Section 6.9.4.3 (FoilTeX): review paragraph

* Section 6.11.2: item 2, phrase reviewed

* Section 6.12.2: 1st alinea: 'template' instead of 'file'
                  1st item: document option loading

* Section 6.14.2: item Dictum: change optional arg name

* section 6.14.3: add note about v1 obsolecence

* Section 6.15.2: item Page style: edit menu name
                  item Sectioning: change last phrase
		  item Article:  edit menu name

* Section 6.15.3: item Epigraph: add '(optional)'
                                 and change last phrase 

* Section 7.2.1: 2nd alinea: add article
                 3rd alinea: add a couple of words
		 4th alinea: edit vc-command font and manual name


* Section 7.3.2.1: 2nd alinea, 2nd item: add footnote

* Section 7.3.3.3:  suppress vert. spacings
                    edit last alinea

* Section 7.3.3.4: edit 1st alinea