Drop eLyXer, part2.

Removed parts of xHTML-related notes explaining elyxer,
reworded little bit. Native speaker might want to review.

lib/doc/Additional.lyx

@@ -1,5 +1,5 @@
-#LyX 2.4 created this file. For more info see https://www.lyx.org/
-\lyxformat 620
+#LyX 2.5 created this file. For more info see https://www.lyx.org/
+\lyxformat 626
 \begin_document
 \begin_header
 \save_transient_properties true
@@ -126,7 +126,7 @@ initials
 \papersides 2
 \paperpagestyle headings
 \tablestyle default
-\tracking_changes false
+\tracking_changes true
 \output_changes false
 \change_bars false
 \postpone_fragile_content false
@@ -135,6 +135,7 @@ initials
 \html_be_strict true
 \docbook_table_output 0
 \docbook_mathml_prefix 1
+\author 5863208 "ab"
 \end_header
 
 \begin_body
@@ -22633,6 +22634,8 @@ plastex
 ,
  relying upon \SpecialChar LyX
  to produce the \SpecialChar LaTeX
+
+\change_deleted 5863208 1723062487
 ;
  and there is a converter that works directly on \SpecialChar LyX
  files,
@@ -22647,6 +22650,8 @@ er
 
 \end_inset
 
+
+\change_unchanged
 .
  All of these have different advantages and disadvantages.
  
@@ -22726,6 +22731,8 @@ can be a challenge.
 \end_layout
 
 \begin_layout Standard
+
+\change_deleted 5863208 1723062659
 Alex Fernandez's 
 \begin_inset Flex Code
 status collapsed
@@ -22815,12 +22822,20 @@ er
  of course,
  these problems could be solved,
  but the \SpecialChar LyX
- developers have decided to follow a different path and have made \SpecialChar LyX
- itself capable of writing XHTML,
+ developers have decided to follow a different path and have made 
+\change_unchanged
+\SpecialChar LyX
+ itself 
+\change_inserted 5863208 1723062721
+is 
+\change_unchanged
+capable of writing XHTML,
  just as it is capable of writing \SpecialChar LaTeX
 ,
  DocBook,
  and plaintext.
+\change_deleted 5863208 1723062762
+
 \end_layout
 
 \begin_layout Standard
@@ -22834,6 +22849,11 @@ experimental
 \end_inset
 
 .
+
+\change_inserted 5863208 1723062863
+ 
+\change_deleted 5863208 1723062863
+
 \begin_inset Foot
 status collapsed
 
@@ -22880,6 +22900,8 @@ literal "false"
 \end_layout
 
 \begin_layout Standard
+
+\change_deleted 5863208 1723062863
 These advantages are primarily due to the fact that the XHTML output routines,
  since they are part of \SpecialChar LyX
 ,
@@ -22931,6 +22953,8 @@ Kapitel
 \end_layout
 
 \begin_layout Standard
+
+\change_deleted 5863208 1723062863
 Quite generally,
  the output routines know what \SpecialChar LyX
  knows about document layout,
@@ -22938,7 +22962,9 @@ Quite generally,
  about how the document is to be rendered on screen.
  We use this information when we output the document as XHTML.
  In particular,
- \SpecialChar LyX
+ 
+\change_unchanged
+\SpecialChar LyX
  
 \emph on
 automatically
@@ -23026,6 +23052,8 @@ HTML
 \begin_inset Newline newline
 \end_inset
 
+
+\change_deleted 5863208 1723063028
 As mentioned above,
  
 \begin_inset Flex Code
@@ -23063,12 +23091,28 @@ elyxer
  this can work quite well,
  though with more complicated formulae it tends to break down.
  Still,
- this method has the advantage that it is very widely supported and so it may be appropriate for documents that contain only a little,
- fairly simple math.
+ t
+\change_inserted 5863208 1723063028
+T
+\change_unchanged
+his method has the advantage that it is very widely supported and so it may be appropriate for documents that contain only a little,
+ fairly simple math
+\change_inserted 5863208 1723063017
+,
+ though with more complicated formulae it tends to break
+\change_unchanged
+.
 \begin_inset Newline newline
 \end_inset
 
-If Lyx is unable to render a formula as HTML—
+If 
+\change_inserted 5863208 1723063049
+\SpecialChar LyX
+
+\change_deleted 5863208 1723063051
+Lyx
+\change_unchanged
+ is unable to render a formula as HTML—
 for example,
  if the formula uses the 
 \begin_inset Flex Code