Society for Creative Anachronism activities century) fencing manuals. Archery activities in the SCA include both target archery and combat archery, using equipment modified for safety in conjunction with armoured combat during melee scenarios. Armoured Combat (sometimes referred to as "Heavy Combat", "Heavy List", or "Heavy Fighting") using weapons fashioned to generally approximate the sword-and-shield, greatsword, spear, glaive and halberd of the High Middle Ages. Fencing or Rapier Combat, generally approximating the lightly armored "swashbuckling" of the 15th century and the 16th century, emphasizing the rapier over cutting swords. Many members of the Society study and practice period manuals from the salons of Western Europe whose
Bill of materials they are designed (engineering bill of materials), as they are ordered (sales bill of materials), as they are built (manufacturing bill of materials), or as they are maintained (service bill of materials). The different types of BOMs depend on the business need and use for which they are intended. In process industries, the BOM is also known as the formula, recipe, or ingredients list. The phrase "bill of material" (or "BOM") is frequently used by engineers as an adjective to refer not to the literal bill, but to the current production configuration of a product, to distinguish it from modified