crossing-free drawing of an embedded planar mixed graph, such that it is upward 'as much
as possible'. Roughly speaking, in an upward drawing of a mixed graph all (undirected)
edges are monotone in the vertical direction and directed edges flow monotonically from
bottom to top according to their orientation. We study quasi-upward drawings of mixed
graphs, that is, upward drawings where edges can break the vertical monotonicity in a finite …