The book, Introduction to Bioinformatics, by Arthur M. Lesk, 3rd edition; Oxford; low-price-edition; in its chapter-1 (introduction), page-no. 6 ; provided a paragraph, entitled "Dogmas: Central and Peripheral".
As-if; there exist a contrasting term for central dogma.
But while thoroughly going through that paragraph (and other chapters linked(mentioned) in that-paragraph; I couldn't found the mention of the term "peripheral dogma" or such.
From the paragraph; it looks like the term "peripheral" has been used to indicate all information-flows other-than genetic codes, and including Junk-DNA and protein-folding-variations. No mention of epigenetic codes found.
In Web too; I could found only 1 website used the term "peripheral dogma" in context with biology. which, too, does-not mention the definition clearly.
So, What is peripheral dogma?
P.S. this is purely a terminology question; which is looking for authoritative reference about usage of a term.