These definitions may vary depending on the convention and on the expansion of the term's use over time with the introduction of new weapons technologies and concerns. For example: Thus, SALW include grenades, but does not include bows and arrows according to this convention. The International Instrument to Enable States to Identify and Trace, in a Timely and Reliable Manner, Illicit Small Arms and Light Weapons, adopted by the United Nations General Assembly on 8 December 2005 defines small arms and light weapons as: