This plugin for the HexRays decompiler creates a graph of a decompiled function's AST using IDA's internal graph viewer. It zooms in on the graph view at 100%, attaches it to the currently active decompiler widget and focuses on the node that belongs to the current C item.
This plugin is helpful for learning about the c-tree items of the HexRays AST. It can be used for developing and debugging scripts and plugins for the HexRays decompiler.