--- imach/src/imach.c	2019/05/22 17:56:10	1.297
+++ imach/src/imach.c	2019/05/22 18:19:56	1.298
@@ -1,6 +1,9 @@
-/* $Id: imach.c,v 1.297 2019/05/22 17:56:10 brouard Exp $
+/* $Id: imach.c,v 1.298 2019/05/22 18:19:56 brouard Exp $
   $State: Exp $
   $Log: imach.c,v $
+  Revision 1.298  2019/05/22 18:19:56  brouard
+  *** empty log message ***
+
   Revision 1.297  2019/05/22 17:56:10  brouard
   Summary: Fix bug by moving date2dmy and nhstepm which gaefin=-1
 
@@ -1110,12 +1113,12 @@ typedef struct {
 #define ODIRSEPARATOR '\\'
 #endif
 
-/* $Id: imach.c,v 1.297 2019/05/22 17:56:10 brouard Exp $ */
+/* $Id: imach.c,v 1.298 2019/05/22 18:19:56 brouard Exp $ */
 /* $State: Exp $ */
 #include "version.h"
 char version[]=__IMACH_VERSION__;
 char copyright[]="April 2018,INED-EUROREVES-Institut de longevite-Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research 25293121), Intel Software 2015-2018";
-char fullversion[]="$Revision: 1.297 $ $Date: 2019/05/22 17:56:10 $"; 
+char fullversion[]="$Revision: 1.298 $ $Date: 2019/05/22 18:19:56 $"; 
 char strstart[80];
 char optionfilext[10], optionfilefiname[FILENAMELENGTH];
 int erreur=0, nberr=0, nbwarn=0; /* Error number, number of errors number of warnings  */
@@ -5206,11 +5209,11 @@ void prevalence(double ***probs, double
 
 void  concatwav(int wav[], int **dh, int **bh,  int **mw, int **s, double *agedc, double **agev, int  firstpass, int lastpass, int imx, int nlstate, int stepm)
 {
-  /* Concatenates waves: wav[i] is the number of effective (useful waves) of individual i.
+  /* Concatenates waves: wav[i] is the number of effective (useful waves in the sense that a non interview is useless) of individual i.
      Death is a valid wave (if date is known).
      mw[mi][i] is the mi (mi=1 to wav[i])  effective wave of individual i
      dh[m][i] or dh[mw[mi][i]][i] is the delay between two effective waves m=mw[mi][i]
-     and mw[mi+1][i]. dh depends on stepm.
+     and mw[mi+1][i]. dh depends on stepm. s[m][i] exists for any wave from firstpass to lastpass
   */
 
   int i=0, mi=0, m=0, mli=0;