diff --git a/conllusvg/conllusvgRtoL.js b/conllusvg/conllusvgRtoL.js
new file mode 100644
index 0000000000000000000000000000000000000000..1ac64a3d229bef5454f96502532a6f3b88003a12
--- /dev/null
+++ b/conllusvg/conllusvgRtoL.js
@@ -0,0 +1,245 @@
+// CoNLL-U SVG RtoL by Koichi Yasuoka, September 19, 2020.
+// "conllusvgview.js" is needed.
+"use strict";
+conllusvg.writeNodesSVG=function(textid){
+  var c=conllusvg.main[textid];
+  var n,g,t,w;
+  c.svg.setAttribute("width",c.width);
+  c.svg.setAttribute("height",c.height);
+  c.svg.setAttribute("transform","scale(-1,1)");
+  for(n in c.nodes){
+    g=document.createElementNS("http://www.w3.org/2000/svg","g");
+    g.setAttribute("stroke","black");
+    g.setAttribute("fill","black");
+    if(c.nodes[n].svg!=null)
+      c.svg.removeChild(c.nodes[n].svg);
+    c.nodes[n].svg=g;
+    c.svg.appendChild(g);
+    t=document.createElementNS("http://www.w3.org/2000/svg","text");
+    t.textContent=(c.nodes[n].upostag=="_")?"???":c.nodes[n].upostag;
+    t.setAttribute("transform","scale(-1,1)");
+    t.setAttribute("x",-c.nodes[n].x);
+    t.setAttribute("y",c.nodes[n].y+17);
+    t.setAttribute("text-anchor","middle");
+    t.setAttribute("font-family","sans-serif");
+    t.setAttribute("font-size",15);
+    t.setAttribute("stroke","none");
+    g.appendChild(t);
+    w=t.getBBox().width;
+    t=document.createElementNS("http://www.w3.org/2000/svg","rect");
+    t.setAttribute("x",c.nodes[n].x-w/2-5);
+    t.setAttribute("y",c.nodes[n].y+1);
+    t.setAttribute("width",w+10);
+    t.setAttribute("height",20);
+    t.setAttribute("rx",5);
+    t.setAttribute("ry",5);
+    t.setAttribute("stroke-width",2);
+    t.setAttribute("fill","none");
+    g.appendChild(t);
+    if(c.nodes[n].xpostag!="_"){
+      t=document.createElementNS("http://www.w3.org/2000/svg","text");
+      t.textContent=c.nodes[n].xpostag;
+      t.setAttribute("transform","scale(-1,1)");
+      t.setAttribute("x",-c.nodes[n].x);
+      t.setAttribute("y",c.nodes[n].y+30);
+      t.setAttribute("text-anchor","middle");
+      t.setAttribute("font-family","sans-serif");
+      t.setAttribute("font-size",8);
+      t.setAttribute("stroke","none");
+      g.appendChild(t);
+      w=t.getBBox().width;
+      if(w>90){
+	t.setAttribute("transform","scale("+(90/w)+",1)");
+	t.setAttribute("x",c.nodes[n].x*w/90);
+      }
+    }
+    if(c.nodes[n].form!="_"){
+      t=document.createElementNS("http://www.w3.org/2000/svg","text");
+      t.textContent=c.nodes[n].form;
+      t.setAttribute("transform","scale(-1,1)");
+      t.setAttribute("x",-c.nodes[n].x);
+      t.setAttribute("y",c.nodes[n].y+60);
+      t.setAttribute("text-anchor","middle");
+      t.setAttribute("font-family","sans-serif");
+      t.setAttribute("font-size",30);
+      t.setAttribute("stroke","none");
+      if(c.nodes[n].misc.indexOf("FontStyle=Italic")>=0)
+	t.setAttribute("font-style","oblique");
+      g.appendChild(t);
+      w=t.getBBox().width;
+      if(w>90){
+	t.setAttribute("transform","scale("+(-90/w)+",1)");
+	t.setAttribute("x",-c.nodes[n].x*w/90);
+      }
+    }
+    w=c.nodes[n].misc.match(/(Gloss|Translit)=[^|]+/);
+    if(w!=null){
+      t=document.createElementNS("http://www.w3.org/2000/svg","text");
+      t.textContent=w[0].slice(w[0].indexOf("=")+1);
+      t.setAttribute("transform","scale(-1,1)");
+      t.setAttribute("x",-c.nodes[n].x);
+      t.setAttribute("y",c.nodes[n].y+75);
+      t.setAttribute("text-anchor","middle");
+      t.setAttribute("font-family","serif");
+      t.setAttribute("font-size",12);
+      t.setAttribute("stroke","none");
+      g.appendChild(t);
+      w=t.getBBox().width;
+      if(w>90){
+	t.setAttribute("transform","scale("+(-90/w)+",1)");
+	t.setAttribute("x",-c.nodes[n].x*w/90);
+      }
+    }
+  }
+}
+conllusvg.writeLinksSVG=function(textid){
+  var c=conllusvg.main[textid];
+  var n,g;
+  c.svg.setAttribute("width",c.width);
+  c.svg.setAttribute("height",c.height);
+  c.svg.setAttribute("transform","scale(-1,1)")
+  for(n in c.links){
+    g=document.createElementNS("http://www.w3.org/2000/svg","g");
+    g.setAttribute("stroke","black");
+    g.setAttribute("fill","black");
+    if(c.links[n].svg!=null)
+      c.svg.removeChild(c.links[n].svg);
+    c.links[n].svg=g;
+    c.svg.appendChild(g);
+    if(c.links[n].type=="root")
+      conllusvg.writeLinksSVGroot(c.links[n]);
+    else if(c.links[n].type=="single")
+      conllusvg.writeLinksSVGsingle(c.links[n]);
+    else if(c.links[n].type=="double")
+      conllusvg.writeLinksSVGdouble(c.links[n]);
+  }
+}
+conllusvg.writeLinksSVGroot=function(link){
+  var t,w;
+  t=document.createElementNS("http://www.w3.org/2000/svg","text");
+  t.textContent=(link.deprel=="_")?"root":link.deprel;
+  t.setAttribute("transform","scale(-1,1)");
+  t.setAttribute("x",-link.fromX);
+  t.setAttribute("y",link.fromY+5);
+  t.setAttribute("text-anchor","middle");
+  t.setAttribute("font-family","sans-serif");
+  t.setAttribute("font-size",15);
+  t.setAttribute("stroke","none");
+  link.svg.appendChild(t);
+  w=t.getBBox().width;
+  if(w>90){
+    t.setAttribute("transform","scale("+(-90/w)+",1)");
+    t.setAttribute("x",-link.fromX*w/90);
+  }
+  t=document.createElementNS("http://www.w3.org/2000/svg","path");
+  t.setAttribute("fill","none");
+  t.setAttribute("stroke-width",1);
+  t.setAttribute("d","M "+link.fromX+" "+(link.fromY+5)+" v "+(link.toY-link.fromY-5));
+  link.svg.appendChild(t);
+  t=document.createElementNS("http://www.w3.org/2000/svg","path");
+  t.setAttribute("d","M "+link.toX+" "+link.toY+" l -4 -10 h 8 Z");
+  link.svg.appendChild(t);
+}
+conllusvg.writeLinksSVGsingle=function(link){
+  var j=(link.fromX<link.toX)?link.fromX:link.toX;
+  var k=(link.fromX<link.toX)?link.toX:link.fromX;
+  var t,w;
+  t=document.createElementNS("http://www.w3.org/2000/svg","text");
+  t.textContent=(link.deprel=="_")?"???":link.deprel;
+  t.setAttribute("transform","scale(-1,1)");
+  t.setAttribute("x",-link.halfX);
+  t.setAttribute("y",link.halfY+5);
+  t.setAttribute("text-anchor","middle");
+  t.setAttribute("font-family","sans-serif");
+  t.setAttribute("font-size",15);
+  t.setAttribute("stroke","none");
+  link.svg.appendChild(t);
+  w=t.getBBox().width;
+  if(link.len-w<10){
+    t.setAttribute("transform","scale("+(-(link.len-10)/w)+",1)");
+    t.setAttribute("x",-link.halfX*w/(link.len-10));
+    w=link.len-10;
+  }
+  t=document.createElementNS("http://www.w3.org/2000/svg","path");
+  t.setAttribute("fill","none");
+  t.setAttribute("stroke-width",1);
+  t.setAttribute("d","M "+j+" "+link.fromY+" v "+(link.halfY-link.fromY+5)+" q 0 -5 5 -5 h "+(link.halfX-j-w/2-5)+" m "+w+" 0 h "+(k-link.halfX-w/2-5)+" q 5 0 5 5"+" v "+(link.toY-link.halfY-5));
+  link.svg.appendChild(t);
+  t=document.createElementNS("http://www.w3.org/2000/svg","path");
+  t.setAttribute("d","M "+link.toX+" "+link.toY+" l -4 -10 h 8 Z");
+  link.svg.appendChild(t);
+}
+conllusvg.writeLinksSVGdouble=function(link){
+  var upper,lower,t,w;
+  upper=new Object();
+  lower=new Object();
+  if(link.fromY<link.toY){
+    upper.fromX=link.fromX;
+    upper.fromY=link.fromY;
+    upper.toX=link.firstX;
+    upper.toY=link.firstY
+    upper.len=link.firstLen;
+    lower.fromX=link.secondX;
+    lower.fromY=link.secondY;
+    lower.toX=link.toX;
+    lower.toY=link.toY;
+    lower.len=link.secondLen;
+  }
+  else{
+    upper.fromX=link.toX;
+    upper.fromY=link.toY;
+    upper.toX=link.secondX;
+    upper.toY=link.secondY
+    upper.len=link.secondLen;
+    lower.fromX=link.firstX;
+    lower.fromY=link.firstY;
+    lower.toX=link.fromX;
+    lower.toY=link.fromY;
+    lower.len=link.firstLen;
+  }
+  t=document.createElementNS("http://www.w3.org/2000/svg","text");
+  t.textContent=(link.deprel=="_")?"???":link.deprel;
+  t.setAttribute("transform","scale(-1,1)");
+  t.setAttribute("x",-upper.toX);
+  t.setAttribute("y",upper.toY+5);
+  t.setAttribute("text-anchor","start");
+  t.setAttribute("font-family","sans-serif");
+  t.setAttribute("font-size",15);
+  t.setAttribute("stroke","none");
+  link.svg.appendChild(t);
+  upper.w=t.getBBox().width;
+  if(upper.len-upper.w<5){
+    t.setAttribute("transform","scale("+(-(upper.len-5)/upper.w)+",1)");
+    t.setAttribute("x",-upper.toX*upper.w/(upper.len-5));
+    upper.w=upper.len-5;
+  }
+  t=document.createElementNS("http://www.w3.org/2000/svg","path");
+  t.setAttribute("fill","none");
+  t.setAttribute("stroke-width",1);
+  t.setAttribute("d","M "+upper.fromX+" "+upper.fromY+" v "+(upper.toY-upper.fromY+5)+" q 0 -5 5 -5 h "+(upper.toX-upper.fromX-upper.w-5));
+  link.svg.appendChild(t);
+  t=document.createElementNS("http://www.w3.org/2000/svg","text");
+  t.textContent=(link.deprel=="_")?"???":link.deprel;
+  t.setAttribute("transform","scale(-1,1)");
+  t.setAttribute("x",-lower.fromX);
+  t.setAttribute("y",lower.fromY+5);
+  t.setAttribute("text-anchor","end");
+  t.setAttribute("font-family","sans-serif");
+  t.setAttribute("font-size",15);
+  t.setAttribute("stroke","none");
+  link.svg.appendChild(t);
+  lower.w=t.getBBox().width;
+  if(lower.len-lower.w<5){
+    t.setAttribute("transform","scale("+((lower.len-5)/lower.w)+",1)");
+    t.setAttribute("x",lower.fromX*lower.w/(lower.len-5));
+    lower.w=lower.len-5;
+  }
+  t=document.createElementNS("http://www.w3.org/2000/svg","path");
+  t.setAttribute("fill","none");
+  t.setAttribute("stroke-width",1);
+  t.setAttribute("d","M "+(lower.fromX+lower.w)+" "+lower.fromY+" h "+(lower.toX-lower.fromX-lower.w-5)+" q 5 0 5 5 v "+(lower.toY-lower.fromY-5));
+  link.svg.appendChild(t);
+  t=document.createElementNS("http://www.w3.org/2000/svg","path");
+  t.setAttribute("d","M "+link.toX+" "+link.toY+" l -4 -10 h 8 Z");
+  link.svg.appendChild(t);
+}
diff --git a/conllusvg/editorRtoL.html b/conllusvg/editorRtoL.html
new file mode 100644
index 0000000000000000000000000000000000000000..24d704f98ac0a3ad8e8cdacc46aaf4bd4be1d6e0
--- /dev/null
+++ b/conllusvg/editorRtoL.html
@@ -0,0 +1,54 @@
+<!DOCTYPE html><head><meta charset="UTF-8" />
+<meta http-equiv="X-UA-Compatible" content="IE=edge" />
+<title>CoNLL-U SVG Editor RtoL by Koichi Yasuoka, September 19, 2020.</title>
+<script src="conllusvgview.js"></script>
+<script src="conllusvgRtoL.js"></script>
+<script src="conllusvgedit.js"></script>
+<script src="conllusvgload.js"></script>
+<script type="text/javascript">
+function editorCheckURL(textid){
+  var tx=document.getElementById(textid);
+  var h=location.href;
+  var i=h.indexOf("#");
+  if(0>i)
+    return;
+  if(1>h.length-i)
+    return;
+  h=decodeURIComponent(h.slice(i+1))+"\n";
+  if(tx.value==null)
+    tx.textContent=h;
+  else
+    tx.value=h;
+}
+function editorChangeURL(textid){
+  var tx=document.getElementById(textid);
+  var h=location.href+"#";
+  var i=h.indexOf("#");
+  var v=tx.value;
+  if(v==null)
+    v=tx.textContent;
+  location.href=h.substring(0,i+1)+encodeURIComponent(v);
+}
+editorInsertTextline=conllusvg.insertTextline
+conllusvg.insertTextline=function(textid,i,j,t){
+  editorInsertTextline(textid,i,j,t);
+  editorChangeURL(textid);
+}
+</script>
+</head>
+<body>
+<table noborder><tr><td nowrap>
+<input type="button" value="load CoNLL-U" onclick="conllusvg.loadLocal('conllu')" />
+<input type="button" value="save CoNLL-U" onclick="conllusvg.saveLocal('conllu')" />
+<text id="status" />
+</td></tr></table>
+<textarea cols="120" rows="10" id="conllu" onchange="conllusvg.reparse('conllu');editorChangeURL('conllu')">
+1	I	I	PRON	_	_	2	nsubj	_	_
+2	have	have	VERB	_	_	0	root	_	_
+3	a	a	DET	_	_	4	det	_	_
+4	pen	pen	NOUN	_	_	2	obj	_	SpaceAfter=No
+5	.	.	PUNCT	_	_	2	punct	_	_
+</textarea>
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" width="100%" height="100%" onload="editorCheckURL('conllu');conllusvg.edit(this,'conllu')">
+</svg>
+</body>