This property file is called ".nc.properties" and it is stored in a folder called "data" under the installation folder. The path is dependent on your input during the installation. The systemwide property file will be updated, if you update exchange rates. You can add additional formats which are shown by the "Format" dialog.
Example:
#/* properties updated */
#Sat May 10 10:43:21 CEST 2003
rates_logic=false
rates_date=Monday, May 5, 2003 at 9am
rates_preferred=pacific.commerce.ubc.ca.filter
format_0=$SVALUE \= $TVALUE
format_1=$SVALUE [$SUNIT] \= $TVALUE [$TUNIT]
format_2=$SVALUE [$SFLAG; $SUNIT] \= $TVALUE [$TFLAG; $TUNIT]
format_3=$SVALUE\t$TVALUE
format_4=$SVALUE\t$SUNIT\t$TVALUE\t$TUNIT
format_5=$SVALUE\t$SFLAG\t$SUNIT\t$TVALUE\t$TFLAG\t$TUNIT
format_6=$SVALUE;$SUNIT;$TVALUE;$TUNIT
format_7=<tr><td>$SVALUE</td><td>$SUNIT</td><td>$TVALUE</td><td>$TUNIT</td></tr>
Description of all valid keys:
# Leading hashes will be ignored rates_logic the logic of the exchange rates (true or false) rates_date the date of the exchange rates rates_preferred the latest selected exchange reates filter rates_preferred_dir the latest selected directory format_<n> The format which should appear in the dialog box called "Set format for notice". The decimal parameter <n> must begin with 0.