--param editor, expand entry boxes in focus
--change param dialog to panel within main window
--command line option for additional block wrappers
--zoom in/out (cairo vector graphics) (use scroll wheel as control)
--search for blocks
--click and drag on whitespace to scroll
--gui grid editor for configuring grid params/placing wxgui plots and controls
--grid param chooser gui
--histogram plot
+* extract category from doxygen
+ * fix up block tree to mirror current doxygen group
+ * remove blocks in block tree covered by doxygen
+* param editor, expand entry boxes in focus
+* change param dialog to panel within main window
+* gui grid editor for configuring grid params/placing wxgui plots and controls
+* drag from one port to another to connect
+* per parameter docs
+ * extract individual param docs from doxygen
+ * doc tag in param for handwritten notes
+* separate generated code into top block and gui class
+ * use gui.py in gr-wxgui and remove custom top_block_gui
+* configuration option for adding block paths
+* orientations for ports (top, right, bottom, left)
+ * source defaults to right, sink defaults to left
+* separation of variables and gui controls
+* speedup w/ background layer and animation layer
+* multiple doxygen directories (doc_dir becomes doc_path)
+* use pango markup in tooltips for params
+* use get_var_make to determine if it is a variable, not regexp
+* concept of a project, or project flow graph
+ * collection of blocks, hier and top
+ * system-wide, default/work, and user created
+* use templates/macros to generate the repetative stuff in the xml