31. The criminal code sets minimum and maximum sentences for offenses to allow for the varying circumstances of each crime and criminal. 32. In keeping with the rigid code set by the Nantucket Historic District Commission, the Cumberland Farms convenience store is gray shingled. 33. Though the code structure is different, as a code set , OPCS-4 is comparable to the American Medical Association's Current Procedural Terminology. 34. At present there are no universal guidelines as to which code set to use, and recommendations vary from country to country. 35. The ICD code sets also contain procedure codes ( ICD-10-PCS codes ), but these are only used in the inpatient setting. 36. During the American Civil War, both the Dix Hill Cartel and the Lieber Code set out rules regarding prisoner of war parole. 37. Note that the plane 1 of CNS 11643 is encoded twice as code set 1 and a part of code set 2. 38. The United States is the only developed nation that is still using the ICD-9 code set which was implemented in the 1970s. 39. Note that the plane 1 of CNS 11643 is encoded twice as code set 1 and a part of code set 2. 40. The United States developed a famous color-coded set of war plans in the early 20th century; see United States color-coded war plans.