Illustration of a short stretch arising from fragment assembly using fragments of nine residues. Here, each “block” represents an angle triplet consisting of the three backbone torsions φ, ψ, and ω for a given residue. (a) Gives a temporal perspective that shows the consecutive insertion of different fragments. (b) Provides a more compact view of the relevant information. This memory-less view is adopted within most fragment-assembly techniques, that is, information about the origin and the order of insertion of given values is discarded. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]