The dependence of the abstract boundary classification on a set of   curves II: How the classification changes when the bounded parameter property   satisfying set of curves changes
  The abstract boundary uses sets of curves with the bounded parameter property (b.p.p.) to classify the elements of the abstract boundary into regular points, singular points, points at infinity and so on. Building on the material of Part one of this two part series, we show how this classification changes when the set of b.p.p. satisfying curves changes. 
B. E. Whale
gr-qc