diff --git a/src/Screen.h b/src/Screen.h
--- a/src/Screen.h
+++ b/src/Screen.h
@@ -220,6 +220,11 @@
      * If @p n is 0 then one character is inserted.
      */
     void insertChars(int n);
+    /**
+     * Repeat the preceeding graphic character @n times, including SPACE.
+     * If @n is 0 then the character is repeated once.
+     */
+    void repeatChars(int n);
     /**
      * Removes @p n lines beginning from the current cursor position.
      * The position of the cursor is not altered.
@@ -717,6 +722,9 @@
 
     // last position where we added a character
     int _lastPos;
+
+    // used in REP (repeating char)
+    unsigned short _lastDrawnChar;
 };
 
 }
diff --git a/src/Screen.cpp b/src/Screen.cpp
--- a/src/Screen.cpp
+++ b/src/Screen.cpp
@@ -73,7 +73,8 @@
     _effectiveForeground(CharacterColor()),
     _effectiveBackground(CharacterColor()),
     _effectiveRendition(DEFAULT_RENDITION),
-    _lastPos(-1)
+    _lastPos(-1),
+    _lastDrawnChar(0)
 {
     _lineProperties.resize(_lines + 1);
     for (int i = 0; i < _lines + 1; i++) {
@@ -248,6 +249,24 @@
     }
 }
 
+void Screen::repeatChars(int n)
+{
+    if (n == 0) {
+        n = 1; // Default
+    }
+
+    // From ECMA-48 version 5, section 8.3.103:
+    // "If the character preceding REP is a control function or part of a
+    // control function, the effect of REP is not defined by this Standard."
+    //
+    // So, a "normal" program should always use REP immediately after a visible
+    // character (those other than escape sequences). So, _lastDrawnChar can be
+    // safely used.
+    for (int i = 0; i < n; i++) {
+        displayCharacter(_lastDrawnChar);
+    }
+}
+
 void Screen::deleteLines(int n)
 {
     if (n == 0) {
@@ -751,6 +770,8 @@
     currentChar.rendition = _effectiveRendition;
     currentChar.isRealCharacter = true;
 
+    _lastDrawnChar = c;
+
     int i = 0;
     const int newCursorX = _cuX + w--;
     while (w != 0) {
diff --git a/src/Vt102Emulation.cpp b/src/Vt102Emulation.cpp
--- a/src/Vt102Emulation.cpp
+++ b/src/Vt102Emulation.cpp
@@ -240,7 +240,7 @@
     for (i = 32; i < 256; ++i) {
         charClass[i] |= CHR;
     }
-    for (s = (quint8 *)"@ABCDGHILMPSTXZcdfry"; *s != 0u; ++s) {
+    for (s = (quint8 *)"@ABCDGHILMPSTXZbcdfry"; *s != 0u; ++s) {
         charClass[*s] |= CPN;
     }
     // resize = \e[8;<row>;<col>t
@@ -684,6 +684,7 @@
     case TY_CSI_PN('T'      ) : _currentScreen->scrollDown           (p         ); break;
     case TY_CSI_PN('X'      ) : _currentScreen->eraseChars           (p         ); break;
     case TY_CSI_PN('Z'      ) : _currentScreen->backtab              (p         ); break;
+    case TY_CSI_PN('b'      ) : _currentScreen->repeatChars          (p         ); break;
     case TY_CSI_PN('c'      ) :      reportTerminalType   (          ); break; //VT100
     case TY_CSI_PN('d'      ) : _currentScreen->setCursorY           (p         ); break; //LINUX
     case TY_CSI_PN('f'      ) : _currentScreen->setCursorYX          (p,      q); break; //VT100