```
warning: Tag 'LATEX_SOURCE_CODE' at line 1971 of file '.../doc_dxy/BaseDoxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
warning: Tag 'RTF_SOURCE_CODE' at line 2061 of file '.../doc_dxy/BaseDoxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
warning: Tag 'DOCBOOK_PROGRAMLISTING' at line 2166 of file '.../BaseDoxyfile' has become obsolete.
To avoid this warning please remove this line from your configuration file or upgrade it using "doxygen -u"
```
these tags have been declared obsolete (in the current master version), so they should be removed..
CGAL doesn't use the involved formats so this has no influence on the CGAL documentation processing.
In the version 1.9.0 the setting `COLS_IN_ALPHA_INDEX` has been made obsolete and generates a warning during building.
As the default value is used it can also be removed (doxygen will automatically take the default value in the older versions).
Due to some subtle interactions between used doxygen commands and the defined `\cgalAdvancedEnd` incorrect HTML code is generated.
This was shown by `xmllint (and some options) as
```
parser error : Opening and ending tag mismatch: div line</td></tr>
```
With the `\noop` "trick" this can here be overcome.
The presented output though looked OK.
Sébastien Loriot
albert-github
Laurent Rineau
Mael Rouxel-Labbé
Dmitry Anisimov
Maxime Gimeno