Frequently Asked Questions
What is a 'Stack'
The term stack is used to describe a grouping of measures together that have a common theme or genesis. We have deliberately avoided the term 'collection' to disambiguate the use of such a term for the national collections which contain data rather than meta-data.
The term stack arises as a sub-component of the term library.
Why can't I find any IPIF Measures?
The Integrated Performance and Incentive Framework (IPIF) has evolved into the System Level Measures Framework (SLMF). Try searching for SLMF or System Level Measures. We have progressively changed any IPIF related material across to the more up-to-date SLMF reference.