diff --git a/composeApp/src/commonMain/kotlin/mg/dot/feufaro/solfa/Solfa.kt b/composeApp/src/commonMain/kotlin/mg/dot/feufaro/solfa/Solfa.kt
index 5face48..48ec8b7 100644
--- a/composeApp/src/commonMain/kotlin/mg/dot/feufaro/solfa/Solfa.kt
+++ b/composeApp/src/commonMain/kotlin/mg/dot/feufaro/solfa/Solfa.kt
@@ -11,6 +11,7 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
     private val T: MutableList<PTemplate> = mutableListOf()
     private val N: MutableList<POneVoiceNote> = mutableListOf()
     private val L: MutableList<POneStanzaLyrics> = mutableListOf()
+    private val O: MutableMap<Int, MutableList<String>> = mutableMapOf()
     private val unparsedNote = mutableListOf<String>()
     private var refrainBeginsAt = -1
     companion object {
@@ -31,6 +32,7 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
         val REGEX_MALAGASY_MN           = Regex("([aeio])_([nm])([tdjkbp])")
         val REGEX_MALAGASY_MN_STAGE2    = Regex("_([mn])-")
         val REGEX_PAREN_RECURSIVE       = Regex("(\\([^\\(\\)]*)\\(([^\\)]*)\\)")
+        val REGEX_COMMENT               = Regex("\\$\\{[^\\}]*\\}")
     }
     var nextTIndex: Int = -1
     var nextNIndex: Int = -1
@@ -269,14 +271,15 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
             value = line.trim().substring(3)
         }
 
-        if (key != "") {
-            if ((key == "T") && (index == 0)) {
+        when (key) {
+            "T" -> if (index == 0) {
                 loadT(value)
-            } else if (key == "N") {
+            }
+            "N" ->
                 // Les lignes de type N seront parsées à la fin. preloadN() se chargera d'abord de réarranger la ligne
                 // pour bien gérer les parenthèses.
                 unparsedNote.add(index.toString()+value)
-            } else if (key == "M") {
+            "M" -> {
                 val metaChunks: List<String> = value.split(REGEX_PARSE_META)
                 metaChunks.forEach { parseMeta(it) }
                 parseMeta(value)
@@ -285,17 +288,18 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
                 sharedScreenModel.setSongAuthor(meta["a"] ?: "")
                 sharedScreenModel.setSongComposer(meta["h"] ?: "")
                 sharedScreenModel.setSongRhythm(meta["r"] ?: "")
-            } else if (key == "L") {
-                loadL(index, value)
-            } else if (key == "Y") {
-                loadY(index, value)
-            } else if (key == "E") {
-                loadE(index, value)
-            } else if (key == "U") {
-                loadU(value)
-            } else {
-                //setData(key, index, value)
             }
+            "L" ->
+                loadL(index, value)
+            "Y" ->
+                loadY(index, value)
+            "E" ->
+                loadE(index, value)
+            "U" ->
+                loadU(value)
+            "O" ->
+                loadO(index, value)
+
         }
 
     }
@@ -374,6 +378,9 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
         val parsedULine = uObject.parsed()
         loadT(parsedULine)
     }
+    fun loadO(index:Int, line:String) {
+        O.getOrPut(index) { mutableListOf() }.add(line)
+    }
     fun parseMeta(line: String) {
         /* $_a_keyAbbrev = array(
   'a' => 'author',
@@ -430,16 +437,21 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
     private fun loadL(stanzaNumber: Int, lyrics: String) {
         try {
             getLyricsComments(lyrics)
-            val loadedLyrics = lyrics.replace(REGEX_LYRICS_COMMENT, "")
+            val comments = REGEX_COMMENT.findAll(lyrics)
+            val commentsIterator = comments.iterator()
+            val loadedLyrics = lyrics//.replace(REGEX_LYRICS_COMMENT, "")
                 .replace(REGEX_LYRICS_REPETITION) { matchResult ->
                     val repeating = matchResult.destructured.match.groupValues[1]
                     "_".repeat(repeating.toString().toInt())
                 }
-                //.replace("/", "_")
                 .addHyphens()
-            val arrayLyrics = loadedLyrics.split(Regex("[/_]"))
+            val lyricsFinal = REGEX_COMMENT.replace(loadedLyrics) { matchResult ->
+                commentsIterator.next().value
+            }
+            val arrayLyrics = lyricsFinal.split(Regex("[/_]"))
             arrayLyrics.forEachIndexed { i, lyricsItem ->
-                addLyricsItem(stanzaNumber, i, lyricsItem)
+                val originalLyrics = REGEX_COMMENT.replace(lyricsItem, "")
+                addLyricsItem(stanzaNumber, i, originalLyrics)
             }
             if (refrainBeginsAt > 0 && stanzaNumber > 1 && !lyrics.contains($$"${R!}"))  {
                 copyRefrainToStanza(stanzaNumber)
@@ -449,6 +461,7 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
                 val lyricsIterator = lyricsComment.iterator()
                 while (lyricsIterator.hasNext()) {
                     val item = lyricsIterator.next()
+                    // @todo: if item == ${O:...}
                     // ${D:xxx} lyrics of DC and DSs
                     if (item.substring(0, 4) == $$"${D:") {
                         item.replace(REGEX_LYRICS_COMMENT, "$2")
@@ -469,16 +482,14 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
         }
         lyricsComment.clear()
     }
-    // loadY is a smart lyrics parser for Malagasy language
-    private fun loadY(intKey: Int, lyrics: String) {
+    fun smartYLyrics(lyrics: String): String {
+        // Les ${O:1} risquent de changer en ${O:_1}. Sauvegardons-les dans comments.
+        val comments = REGEX_COMMENT.findAll(lyrics)
+        val commentsIterator = comments.iterator()
         val loadedLyrics = lyrics
-            .also { println(it)}
             .replace(REGEX_VOWELS_STAGE1, "$0_")
-            .also { println(it)}
             .replace(REGEX_VOWELS_STAGE2,   "$1_")
-            .also { println(it)}
             .replace(REGEX_VOWELS_STAGE3, "$1_")
-            .also { println(it)}
             .replace(" ", " _")
             .replace("_\\ _", " ")
             .replace("_\\", "")
@@ -487,10 +498,18 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
             .replace(REGEX_MALAGASY_MN, "$1$2_$3")
             .replace(REGEX_MALAGASY_MN_STAGE2, "$1-_")
             .replace("_n'", "n'_")
-        loadL(intKey, loadedLyrics)
+        // Et remettons les valeurs originales de ${...}
+        val lyricsFinal = REGEX_COMMENT.replace(loadedLyrics) { matchResult ->
+            commentsIterator.next().value
+        }
+        return lyricsFinal
+        }
+    // loadY is a smart lyrics parser for Malagasy language
+    private fun loadY(intKey: Int, lyrics: String) {
+        val smartLyrics = smartYLyrics(lyrics)
+        loadL(intKey, smartLyrics)
     }
-    // loadE is a smart Lyrics parser for English language
-    private fun loadE(intKey: Int, lyrics: String) {
+    fun smartELyrics(lyrics: String): String {
         val loadedLyrics = lyrics
             .replace(" ", " _")
             .replace("\\ _", " ")
@@ -498,7 +517,12 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
             .replace("_/", "/")
             .replace("_0", "")
         getLyricsComments(loadedLyrics)
-        loadL(intKey, loadedLyrics.replace(REGEX_LYRICS_COMMENT, ""))
+        return loadedLyrics
+    }
+    // loadE is a smart Lyrics parser for English language
+    private fun loadE(intKey: Int, lyrics: String) {
+        val smartLyrics = smartELyrics(lyrics)
+        loadL(intKey, smartLyrics)
     }
     private fun getLyricsComments(lyrics: String) {
         val matchResult = REGEX_LYRICS_COMMENT.findAll(lyrics)
@@ -535,7 +559,4 @@ class Solfa(val sharedScreenModel: SharedScreenModel, private val fileRepository
             L[i].appendDSLyrics(stanzaNumber, lyricsItem)
         }
     }
-}
-fun getOpt(x: String) : String {
-    return ""
 }
\ No newline at end of file