2 treaty body members. It also provides information on the privileges and immunities that they enjoy as well as the standards of conduct expected of them while performing their duties. The chapter then refers to the prohibition of discrimination, harassment and abuse. Chapter IV provides details of the workload that a treaty body member should expect. Chapter V sets out some practical details relating to travel and administration which all treaty body members need to be aware of to ensure the smooth running of a session.2 B. The treaty bodies and their procedures The international human rights treaty system comprises nine core treaties. Committees of independent experts have been established to review treaty implementation by States that have ratified or acceded to these treaties (“States parties”).3 A tenth treaty, the Optional Protocol to the Convention against Torture, establishes the Subcommittee on Prevention of Torture, with a specific mandate to visit States parties with a view to preventing torture. Each treaty body has the authority to undertake a range of activities to review and support treaty implementation. Not all treaty bodies have the same procedures, however (see also table 2): ✔✔ Reporting procedure. States have obligations under the nine core treaties as well as under the first two Optional Protocols to the Convention on the Rights of the Child4 to submit reports on the measures they have adopted to give effect to the rights recognized in the treaties as well as on progress made in the enjoyment of those rights. Treaty bodies review these reports, usually in a dialogue with a delegation from the State party, identifying issues of concern and making related recommendations. Treaty bodies compile these issues and recommendations in what are known as concluding observations. All treaty bodies have adopted the practice of receiving written and oral submissions from non-governmental organizations (NGOs), NHRIs and United Nations entities to help in their review of State party reports. Figure I sets out the reporting cycle for most treaty bodies. 2 3 4  ee also the OHCHR glossary of related terms, available from S www.ohchr.org/EN/HRBodies/Pages/TBGlossary.aspx (accessed 5 August 2015). The treaties establish all but one of these committees. The Committee on Economic, Social and Cultural Rights was established by Economic and Social Council resolution 1985/17 of 28 May 1985 to carry out the monitoring functions assigned to the Council in Part IV of the International Covenant on Economic, Social and Cultural Rights.  Optional Protocol on the Sale of Children, Child Prostitution and Child Pornography; and Optional Protocol on the Involvement of Children in Armed Conflict.