 However, there is no standardized version of this shorthand; different publishers and librarians use different systems, especially for doubling/alternate/additional instruments.David Daniels, in earlier versions of his influential work that collects in print a catalog of the orchestrations of some 4,000+ pieces, made use of a shorthand for doubling/alternate/additional instruments which was less clear, but in the newer online version Daniels' approach has been refined to something more explicit, akin to the Chester Novello and Boosey & Hawkes notations below.Examples for different notations for the same orchestration