CYCLEFLOWCONV contains four chip generators, which generate chips in AstroChip2.1 (running faster in AstroChip2.3), which can be tested in the free AstroChip2.1 or AstroChip2.3. GraphCycles detects a cycle in an undirected graph, GraphFlow calculates the paths of a network flow through a graph between nodes a and b, TreeDepth calculates the depth of a tree and TreeListConv converts a Tree into a list.