Professionals or repeaters are men with an object, sound in mind and in body, competent, often highly skilled, who deliberately and with open eyes prefer a life of crime and know all the tricks and maneuvers necessary for that life. They may be first offenders. Classification of convicted prisoners according to age. Rule227. Convicted prisoners are further classified as under:(a) Juveniles under the age of 18. (b) Adolescent over 18 and under 21 years of age. (c) Adults over the age of 21. Nature of sentence. Rule228. There shall be two classes of convicted prisoners according to the nature of their sentence, i.e.:(a) those undergoing rigorous imprisonment; and (b) those undergoing simple imprisonment. Classification of under-trial prisoners. Rule 229. Under trial prisoners shall be classified as under: (a) Committed to Sessions. (b) Committed to other Courts. Classification of women prisoners. Rule230. Women prisoners will be classified in the same manner as is provided in the case of males. Separation of prisoners. Rule231. Prisoners shall be kept separate as under: (i) In a prison containing men as well as women. prisoners, the women shall be imprisoned in a separate prison, or separate part of the same prison in such manner as to prevent their seeing conversing or holding any communication with the male prisoners. - 92 "(ii) Juveniles shall be kept separate from all other. prisoners. (iii) Undertrial prisoners shall be kept separate from convicted prisoners. (iv) Civil prisoners shall be kept separate from criminal prisoners. (v) Political prisoners shall be kept separate from a!