Examples of usage:

Text="{Binding Path=[copyright.expirationDays], Converter={StaticResource StringFormatValueConverter}, ConverterParameter=After {0}}" />

<l:Hyperlink NavigateUri="{Binding Path=[copyright.attachs~data], Converter={StaticResource StringFormatValueConverter}, ConverterParameter=~/do.ashx?cmd\=data&amp;dataId\={0}}">

Text="{Binding Path=[variantType.steps~width], Converter={StaticResource StringFormatValueConverter}, ConverterParameter=Width: {0} (positive \= pixel\, negative \= percentage)}"

NavigateUri="{Binding Path=[calendar.id], Converter={StaticResource StringFormatValueConverter}, ConverterParameter=javascript:showDialog(\'TriggersForm.aspx?id\={0}&amp;defaultMode\=Referencing&amp;defaultAttrName\=calendarObject.calendarRef\');}"