diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,8 +1,9 @@
-* Picadae Calibration Programs
+# Picadae Calibration Programs
 
+
+## Install
 sudo dnf install python3-devel jack-audio-connection-kit-devel
 
-
 prerequisites:
 pyyaml
 sounddevice
@@ -12,23 +13,15 @@ pthon-rtmidi
 export PYTHONPATH=${HOME}/src/picadae/control/app
 python p_ac.py -c p_ac.yml
 
-c 60 60 # caputre note 60 using the full_pulseL[] from the p_ac.yml
+## Data collection
 
+Record a sequence of notes of decreasing dynamic level
 
+python p_ac.py # start the interactive data collection program
 
+Capture note 60 and 61 using the full_pulseL[] and holdDutyPctD{} from the p_ac.yml
 
-
-
-# plot third take of note 60 
-python plot_seq.py ~/temp/p_ac_3_oa/60 p_ac.yml 3
-
-# record a calibration take: CalibrateKeys.start
-uses cfg.full_pulseL[] for the pulse sequence
-use cfg.calibrateArgs.holdDutyPctD{} for hold PWM duty cycle
-
-# obsolete plotting function in calibrate_plot.py
-python calibrate_plot.py ~/temp/p_ac_3_oa/60/2 p_ac.yml 60
-
+`c 60 61` 
 
 
 
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