▁un changed ▁port ions ▁between ▁revis ions . ▁Techn ical ▁text ▁is ▁generally ▁best ▁su ited ▁for ▁translation ▁memory , ▁while ▁market ing ▁or ▁cre ative ▁texts ▁will ▁be ▁less ▁suitable . ▁ ▁Effect s ▁on ▁quality ▁ ▁The ▁use ▁of ▁T M ▁systems ▁might ▁have ▁an ▁effect ▁on ▁the ▁quality ▁of ▁the ▁texts ▁translated . ▁Its ▁main ▁effect ▁is ▁clearly ▁related ▁to ▁the ▁so - called ▁" error ▁propag ation ": ▁if ▁the ▁translation ▁for ▁a ▁particular ▁segment ▁is ▁incorrect , ▁it ▁is ▁in ▁fact ▁more ▁likely ▁that ▁the ▁incorrect ▁translation ▁will ▁be ▁re used ▁the ▁next ▁time ▁the ▁same ▁source ▁text , ▁or ▁a ▁similar ▁source ▁text , ▁is ▁translated , ▁thereby ▁perpet u ating ▁the ▁error . ▁Trad itionally , ▁two ▁main ▁effects ▁on ▁the ▁quality ▁of ▁translated ▁texts ▁have ▁been ▁described : ▁the ▁" sent ence - sal ad " ▁effect ▁( B éd ard ▁ 2 0 0 0 ; ▁c ited ▁in ▁O ’ H agan ▁ 2 0 0 9 : ▁ 5 0 ) ▁and ▁the ▁" pe ep - hole " ▁effect ▁( He yn ▁ 1 9 9 8 ). ▁The ▁first ▁refers ▁to ▁a ▁lack ▁of ▁coh er ence ▁at ▁the ▁text ▁level ▁when ▁a ▁text ▁is ▁translated ▁using ▁sentences ▁from ▁a ▁T M ▁which ▁have ▁been ▁translated ▁by ▁different ▁transl ators ▁with ▁different ▁styles . ▁According ▁to ▁the ▁latter , ▁transl ators ▁may ▁adapt ▁their ▁style ▁to ▁the ▁use ▁of ▁T M ▁system ▁in ▁order ▁for ▁these ▁not ▁to ▁contain ▁intr