This is an old revision of the document!
Currently (2013) this is only available for Miscellaneous targets. Make local changes in Object Portfolio Edit screen and submit. “Contribute” button should then show in the OP View screen.
SFX provides a tool for composing local thresholds. However, this works only when holdings are continuous. Split holding thresholds must be written manually with a “||” to separate the runs. For holdings from 1999-2002 and 2008, for example, the script would look like this:
$obj→parsedDate('>=','1999',undef,undef) && $obj→parsedDate('⇐','2002',undef,undef) || $obj→parsedDate('==','2008',undef,undef)
What displays is “Available from 1999 until 2002, Available in 2008”.