Thank you for asking that question, Alex.

filters.odt (Writer version of filter.base + filter.math)

filters-base.ods (Calc version of filter.base) (added 18 November 2015)

filters-math.ods (Calc version of filter.math) (added 18 November 2015)

(filter.base + filter.math are hand-extracted from base.xcd + math.xcd)

```
:~$ /opt/libreoffice5.0/program/soffice.bin --version
LibreOffice 5.0.0.5 437e4abdf9e72fd0a6e6f8697a0e659bc77f9b10
:~$ cat filter.base | wc -l
1
:~$ cat filter.math | wc -l
5
```

Obtained from /opt/libreoffice5.0/share/registry/base.xcd; Debian 6.0:

```
:~$ cat filter.base | sort
"StarOffice XML (Base)" application/vnd.sun.xml.base Extensions:odb
```

Obtained from /opt/libreoffice5.0/share/registry/math.xcd; Debian 6.0:

```
:~$ cat filter.math | sort
"MathML 1.01 (MathML XML (Math))" application/mathml+xml Extensions:mml
"MathType 3.x" Extensions:xxx
"ODF Formula (Math 8)" application/vnd.oasis.opendocument.formula Extensions:odf
"PDF - Portable Document Format" application/pdf Extensions:pdf
"StarOffice XML (Math) (OpenOffice.org 1.0 Formula)" application/vnd.sun.xml.math Extensions:sxm
```

If this helps then please show you like it with an uptick (**∧**)