diff --git a/doc/xscore_gen.md b/doc/xscore_gen.md
index ae99fa1..7d4397e 100644
--- a/doc/xscore_gen.md
+++ b/doc/xscore_gen.md
@@ -277,3 +277,21 @@ in the voice assigned to the first note in the fork will be
 included in the dynamic change. To exclude a note from the
 fork assign it a lower case mark.
 
+Common Error Messages:
+----------------------
+
+The tied C#3 in measure 13 (tick:198460) was not terminated.
+
+The tied Bb3 in measure 12 marked as a tied note but is also marked to sound.
+
+
+Damper down not preceded by damper up in measure:10.
+
+Damper up not preceded by damper down in measure:23.
+
+Damper up/down not preceded by damper down in measure:%34.
+
+
+A shorten/shift operation was done to reconcile two overlapped D4 (ticks:1651523 1651983) notes in measure 335.
+
+A time embedded note (bar=350 A5) was removed even though it overlapped with a note in the same voice.
diff --git a/src/cmtools/cmtools.c b/src/cmtools/cmtools.c
index 7a12c8c..ed1eca3 100644
--- a/src/cmtools/cmtools.c
+++ b/src/cmtools/cmtools.c
@@ -350,7 +350,7 @@ int main( int argc, char* argv[] )
   cmPgmOptInstallInt( poH, kBegBpmPoId,           'e', "beg_bpm",      0,       0,          &begTempoBPM,  1,
     "Set to 0 to use the tempo from the score otherwise set to use the tempo at begMeasNumb." );
 
-  cmPgmOptInstallFlag( poH, kDamperRptPoId,        'p', "damper",       0,      1,          &damperRptFl,  1,
+  cmPgmOptInstallFlag( poH, kDamperRptPoId,        'u', "damper",       0,      1,          &damperRptFl,  1,
     "Print the pedal events during 'score_gen' processing.");
 
   cmPgmOptInstallFlag( poH, kSvgStandAloneFlPoId,  'n', "svg_stand_alone_fl",0, 1,          &svgStandAloneFl, 1,