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+.TH py_flow.d 1m   "$Date:: 2007-10-03 #$" "USER COMMANDS"
+.SH NAME
+py_flow.d - snoop Python execution showing function flow.
+.SH SYNOPSIS
+.B py_flow.d
+
+.SH DESCRIPTION
+This traces Python activity from all Python programs on the system
+running with Python provider support.
+
+This watches Python function entries and returns, and indents child
+function calls.
+.SH OS
+Any
+.SH STABILITY
+Evolving - uses the DTrace Python provider, which may change 
+as additional features are introduced. Check Python/Readme
+to see what version these scripts are based on.
+.SH EXAMPLES
+.TP
+Default output,
+# 
+.B py_flow.d
+.PP
+.SH FIELDS
+.TP
+C
+CPU-id
+.TP
+TIME(us)
+Time since boot, us
+.TP
+FILE
+Filename that this function belongs to
+.TP
+FUNC
+Function name
+.SH LEGEND
+.TP
+\->
+function entry
+.TP
+<\-
+function return
+.SH WARNING
+Watch the first column carefully, it prints the CPU-id. If it
+changes, then it is very likely that the output has been shuffled.
+.PP
+.SH DOCUMENTATION
+See the DTraceToolkit for further documentation under the 
+Examples, Notes and Docs directories. The example files may be
+especially useful as they aim to demonstrate how to interpret
+the output.
+.SH EXIT
+py_flow.d will run until Ctrl-C is hit.
+.SH AUTHOR
+Brendan Gregg
+[CA, USA]
+.SH SEE ALSO
+dtrace(1M)