xscore_gen.md, cmtools.c : Update notes and added 'damper' report flag.

doc/xscore_gen.md

 not just the measurement associated with the decremented color.  
 
 
+### Section Numbering
+
+Rectangles around a number indicate sections numbers.
+Sections are used to aggregate measurements and to 
+indicate where particular transforms will be applied in the electronic score.
+
+
 Preparing the Music XML File
 ----------------------------
 
-*xscore_gen* is know to work with the MusicXML files produced by
+*xscore_gen* is known to work with the MusicXML files produced by
 the [Dolet 6 Sibelius plug-in]<https://www.musicxml.com/>
 
 After generating the file it is necessary to do some
 
 iconv -f UTF-16 -t UTF-8 -o score-utf16.xml score-utf8.xml
 
+On the first line of score-utf8.xml change:
+
+```
+<?xml version='1.0' encoding='UTF-16' standalone='no'?>
+```
+
+to 
+
+```
+<?xml version='1.0' encoding='UTF-8' standalone='no'?>
+```
+
+Note that naively opening `score-utf8.xml` with emacs will
+crash emacs because the stated XML file encoding `encoding='UTF-16'`
+will not match the actual file encoding (UTF-8).  Work around
+this problem by editing the first line with `vi`.
+
+
 
 Create the decoration file
 --------------------------
 
 ```
-cmtools --score_gen -x myscore.xml -d mydec.txt
+cmtools --score_gen -x myscore.xml -d mydec.txt {--damper}
 ```
 
 Here's a snippet of a typical 'decoration' file.

src/cmtools/cmtools.c

   return kOkCtRC;
 }
 
-cmRC_t score_gen( cmCtx_t* ctx, const cmChar_t* xmlFn, const cmChar_t* decFn, const cmChar_t* csvOutFn, const cmChar_t* midiOutFn, const cmChar_t* svgOutFn, unsigned reportFl, int begMeasNumb, int begTempoBPM, bool svgStandAloneFl, bool svgPanZoomFl )
+cmRC_t score_gen( cmCtx_t* ctx, const cmChar_t* xmlFn, const cmChar_t* decFn, const cmChar_t* csvOutFn, const cmChar_t* midiOutFn, const cmChar_t* svgOutFn, unsigned reportFl, int begMeasNumb, int begTempoBPM, bool svgStandAloneFl, bool svgPanZoomFl, bool damperRptFl )
 {
   cmRC_t rc;
   if((rc = verify_file_exists(ctx,xmlFn,"XML file")) != kOkCtRC )
     return rc;
   
-  if( cmXScoreTest( ctx, xmlFn, decFn, csvOutFn, midiOutFn, svgOutFn, reportFl, begMeasNumb, begTempoBPM, svgStandAloneFl, svgPanZoomFl ) != kOkXsRC )
+  if( cmXScoreTest( ctx, xmlFn, decFn, csvOutFn, midiOutFn, svgOutFn, reportFl, begMeasNumb, begTempoBPM, svgStandAloneFl, svgPanZoomFl, damperRptFl ) != kOkXsRC )
     return cmErrMsg(&ctx->err,kScoreGenFailedCtRC,"score_gen failed.");
     
   return kOkCtRC;
   return rc;
 }
 
-cmRC_t  midi_trim(cmCtx_t* ctx, const cmChar_t* midiInFn, unsigned begMidiUId, unsigned endMidiUId, const cmChar_t* midiOutFn)
-{
-  cmRC_t rc;
-  
-  if((rc = verify_file_exists(ctx,midiInFn,"MIDI file")) != kOkCtRC )
-    return rc;
-  // kNoteTerminateFl | kPedalTerminateFl
-  return cmMidiFileTrimFn(ctx,  midiInFn, begMidiUId, endMidiUId, 0, midiOutFn );
-}
-
 
 int main( int argc, char* argv[] )
 {
    kSvgPanZoomFlPoId,
    kBegMeasPoId,
    kBegBpmPoId,
+   kDamperRptPoId,
    kBegMidiUidPoId,
    kEndMidiUidPoId
   };
         kScoreReportSelId,
         kMidiReportSelId,
         kTimelineReportSelId,
-        kAudioReportSelId,
-        kMidiTrimSelId
+        kAudioReportSelId
   };
     
   
   unsigned        svgPanZoomFl    = 1;
   int             begMeasNumb     = 0;
   int             begTempoBPM     = 60;
+  unsigned        damperRptFl     = 0;
   unsigned        begMidiUId      = cmInvalidId;
   unsigned        endMidiUId      = cmInvalidId;
   unsigned        actionSelId     = kNoSelId;
   cmPgmOptInstallEnum( poH, kActionPoId, 'A', "audio_report",    0, kAudioReportSelId, kNoSelId,  &actionSelId, 1,
     "Generate an audio file report.",NULL);
 
-  cmPgmOptInstallEnum( poH, kActionPoId, 'T', "midi_trim",       0, kMidiTrimSelId, kNoSelId,  &actionSelId, 1,
-    "Trim a MIDI file to create a shortened version.",NULL);
   
   cmPgmOptInstallStr( poH, kXmlFileNamePoId,      'x', "muisic_xml_fn",0,    NULL,         &xmlFn,        1, 
     "Name of the input MusicXML file.");
   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,
+    "Print the pedal events during 'score_gen' processing.");
+
   cmPgmOptInstallFlag( poH, kSvgStandAloneFlPoId,  'n', "svg_stand_alone_fl",0, 1,          &svgStandAloneFl, 1,
     "Write the SVG file as a stand alone HTML file. Enabled by default." );
 
     switch( actionSelId )
     {
       case kScoreGenSelId:
-        rc = score_gen( &ctx, xmlFn, decFn, csvScoreFn, midiOutFn, svgOutFn, reportFl, begMeasNumb, begTempoBPM, svgStandAloneFl, svgPanZoomFl );
+        rc = score_gen( &ctx, xmlFn, decFn, csvScoreFn, midiOutFn, svgOutFn, reportFl, begMeasNumb, begTempoBPM, svgStandAloneFl, svgPanZoomFl, damperRptFl );
         break;
 
       case kScoreFollowSelId:
         rc = audio_file_report(&ctx, audioFn, rptFn );
         break;
 
-      case kMidiTrimSelId:
-        rc = midi_trim(&ctx, midiInFn, begMidiUId, endMidiUId, midiOutFn);
-        break;
         
       default:
         rc = cmErrMsg(&ctx.err, kNoActionIdSelectedCtRC,"No action selector was selected.");