In addition, IAS 18 provided limited guidance on many important revenue topics such as accounting for multiple-element arrangements. In contrast, US GAAP comprised broad revenue recognition concepts together with numerous revenue requirements for particular industries or transactions, which sometimes resulted in different accounting for economically similar transactions. IN5 Accordingly, the IASB and the US national standard-setter, the Financial Accounting Standards Board (FASB), initiated a joint project to clarify the principles for recognising revenue and to develop a common revenue standard for IFRS and US GAAP that would: