The Complete Artscroll Siddur has a section after Shacharis entitled "Readings Following Shacharis" which contains
(a) three lists: The Six Rembrances, The Thirteen Principles of Faith, The Ten Commandments
(b) three chapters, The Chapter of Repentance (Deut 30:1-10), The Chapter of Reverence For G-d (Deut 10:12 - 11:9) and The Chapter of Manna (Exod 16:4-36), along with short associated prayers
(c) some concluding prayers: Prayer For Livelihood and After Prayer Services - Morning and Evening, which is two paragraphs plus Psalm 67
(d) and finally the rubric "Some recite Adon Olam"
Is this section a collection of various local practices, or is it a properly constituted section, in the same manner as, say, the Shema and its blessings? In their Seif Edition Weekday Siddur, Artscroll have only included the three lists.