* gr_ofdm_sampler
* size params for the graphical sinks
* callbacks for set average on fft, waterfall, number sinks
+* add units to params: Sps, Hz, dB...
+* command line options should replace _ with - for the --option
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# Features
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* 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
* search for blocks in category window