(From the Greek perikoptein = cut out) is a passage from the Bible. These sections are recited in the liturgy. Epistle passages (for the readings) can be differentiated from the Gospel sections that were also recited from different liturgical books (cf. Gospel Book, cf. Epistolary).
We have been running a specialist store for facsimiles for over 10 years in Regensburg's Old Town, just opposite the "Schottenportal" of the Romanesque Scots Monastery of St. Jacob at Jakobstraße 6.