@@ -319,7 +319,7 @@ There are different ways of implementing the RGE framework, `Monocle 2` uses `DD
DDRTree returns a principal tree of the centroids of cell clusters in low dimension, pseudotime is derived for individual cells by calculating geomdestic distance of their projections onto the tree from the root (user-defined or arbitrarily assigned).
__Note__ Informally, a principal graph is like a principal curve which passes through the ‘middle’ of a data set but is
_Note_ Informally, a principal graph is like a principal curve which passes through the ‘middle’ of a data set but is