diff --git a/termemu.js b/termemu.js
index 62616df..8163c55 100644
--- a/termemu.js
+++ b/termemu.js
@@ -1004,6 +1004,10 @@ var termemu = {
         if (params[i] == 1) {
           keyHexCodes.appCursor(true);
         }
+        else if (params[i] == 7) {
+          /* Wraparound ON is the only mode implemented. */
+          debug(0, "Wraparound mode");
+        }
         else if (params[i] == 1048) {
           this.saveCursor();
         }
@@ -1018,8 +1022,14 @@ var termemu = {
     else if (c == 108) {
       /* l - reset modes */
       if (prefix != '?') {
-        debug(1, "Unimplemented CSI sequence: " + comstr);
-        return;
+        if (prefix === null && params[0] == 4) {
+          /* Insert mode is not implemented. */
+          debug(0, "Replace mode");
+        }
+        else {
+          debug(1, "Unimplemented CSI sequence: " + comstr);
+          return;
+        }
       }
       for (var i = 0; i < params.length; i++) {
         if (params[i] == 1) {