Something
public text v1 · immutable/usr/lib/openoffice/share/registry/modules/org/openoffice/Setup/Setup-calc.xcu
<node oor:name="com.sun.star.sheet.SpreadsheetDocument" oor:op="replace">
<prop oor:name="ooSetupFactoryDefaultFilter">
<!-- <value>calc8</value> -->
<value>MS Excel 97</value>
</prop>
</node>