diff --git a/www/data/css/styles.css b/www/data/css/styles.css
index 0e43b37..0a125cb 100644
--- a/www/data/css/styles.css
+++ b/www/data/css/styles.css
@@ -53,6 +53,13 @@ body {
   display: block;
   width: 100%; }
 
+.generic_hidden {
+  visibility: hidden   !important; }
+
+.generic_collapsed {
+  visibility: collapse !important;
+  display: none !important; }
+
 #headerdiv {
   z-index: 999;
   background-color: #333;
@@ -610,10 +617,17 @@ html, body {
   background: #F8F8F8;
   color: black;
   border: 1px solid rgba(0, 0, 0, 0.15); }
-  .bce_code .bce_code_data {
+  .bce_code .bce_code_data, .bce_code .bce_code_editarea {
     overflow-x: auto;
     font-family: Consolas, Monaco, "Courier New", Menlo, monospace;
     padding: 5px 9.5px;
+    line-height: 12pt;
+    font-size: 10pt; }
+  .bce_code .bce_code_editarea {
+    display: block;
+    resize: none;
+    box-sizing: border-box;
+    line-height: 12pt;
     font-size: 10pt; }
   .bce_code .bce_code_ctrl {
     background: #BBB;
@@ -722,8 +736,5 @@ html, body {
     .bce_code_out .bce_code_out_right {
       width: auto;
       height: 150px; } }
-.b93rnr_outpanel_hidden {
-  visibility: collapse;
-  display: none; }
 
 /*# sourceMappingURL=styles.css.map */
diff --git a/www/data/css/styles_befungerunner.scss b/www/data/css/styles_befungerunner.scss
index 83c158f..86bb20e 100644
--- a/www/data/css/styles_befungerunner.scss
+++ b/www/data/css/styles_befungerunner.scss
@@ -5,11 +5,21 @@
   color: black;
   border: 1px solid rgba(0, 0, 0, 0.15);
 
-  .bce_code_data {
+  .bce_code_data, .bce_code_editarea {
     overflow-x: auto;
     font-family: $FONT_CODE;
     padding: 5px 9.5px;
 
+    line-height: 12pt;
+    font-size: 10pt;
+  }
+
+  .bce_code_editarea {
+    display: block;
+    resize: none;
+    box-sizing: border-box;
+
+    line-height: 12pt;
     font-size: 10pt;
   }
 
@@ -128,6 +138,4 @@
     .bce_code_out_left { flex-grow: 0; height: 100px;}
     .bce_code_out_right { width: auto; height: 150px;}
   }
-}
-
-.b93rnr_outpanel_hidden { visibility: collapse; display: none; }
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/www/data/css/styles_global.scss b/www/data/css/styles_global.scss
index e76d873..989764c 100644
--- a/www/data/css/styles_global.scss
+++ b/www/data/css/styles_global.scss
@@ -57,3 +57,6 @@ body {
   display: block;
   width: 100%;
 }
+
+.generic_hidden    { visibility: hidden   !important;                           }
+.generic_collapsed { visibility: collapse !important; display: none !important; }
diff --git a/www/data/javascript/blogpost_bef93runner.js b/www/data/javascript/blogpost_bef93runner.js
index a83c89f..9d1b2fd 100644
--- a/www/data/javascript/blogpost_bef93runner.js
+++ b/www/data/javascript/blogpost_bef93runner.js
@@ -1,6 +1,15 @@
 
-const BefState = Object.freeze ({ UNINIITIALIZED: {}, INITIAL: {}, RUNNING: {}, PAUSED: {} });
-const BefSpeed = Object.freeze ({ SLOW: {str:'0'}, NORMAL: {str:'+'}, FAST: {str:'++'}, SUPERFAST: {str:'3+'}, MAX: {str:'4+'} });
+const BefState = Object.freeze ({ INITIAL: {}, RUNNING: {}, PAUSED: {}, FINISHED: {}, EDIT: {} });
+const BefSpeed = Object.freeze (
+    {
+        SLOW:      {val:0,str:'0' },
+        NORMAL:    {val:1,str:'+' },
+        FAST:      {val:2,str:'++'},
+        SUPERFAST: {val:3,str:'3+'},
+        MAX:       {val:4,str:'4+'},
+        get: function(i){             for (let x of Object.values(BefSpeed)) if (typeof(x)==='object' && String(x.val) === String(i)) return x;              return null; },
+        max: function( ){let max = 0; for (let x of Object.values(BefSpeed)) if (typeof(x)==='object'                               ) max = Math.max(x.val); return max;  },
+    });
 
 Array.prototype.peek = function() { return this[this.length - 1]; };
 Array.prototype.revjoin = function(sep) {
@@ -14,14 +23,17 @@ function BefObject(domBase) {
     this.btnStop      = domBase.getElementsByClassName('b93rnr_pause')[0];
     this.btnReset     = domBase.getElementsByClassName('b93rnr_reset')[0];
     this.btnSpeed     = domBase.getElementsByClassName('b93rnr_speed')[0];
+    this.btnEdit      = domBase.getElementsByClassName('b93rnr_edit')[0];
     this.pnlCode      = domBase.getElementsByClassName('b93rnr_data')[0];
+    this.pnlEditArea  = domBase.getElementsByClassName('b93rnr_editarea')[0];
     this.pnlBottom    = domBase.getElementsByClassName('b93rnr_outpanel')[0];
     this.pnlOutput    = domBase.getElementsByClassName('b93rnr_output')[0];
     this.pnlStack     = domBase.getElementsByClassName('b93rnr_stack')[0];
     this.lblStackSize = domBase.getElementsByClassName('b93rnr_stacksize')[0];
 
-    this.state    = BefState.UNINIITIALIZED;
-    this.initial  = atob(this.pnlCode.getAttribute('data-befcode'));
+    this.state    = BefState.INITIAL;
+    this.initial  = atob(this.pnlCode.getAttribute('data-b93rnr_code'));
+    this.simspeed = BefSpeed.get(domBase.hasAttribute('data-b93rnr_initialspeed') ? domBase.getAttribute('data-b93rnr_initialspeed') : '4');
     this.code     = [];
     this.width    = 0;
     this.height   = 0;
@@ -32,10 +44,13 @@ function BefObject(domBase) {
     this.stack    = [];
     this.timer    = null;
     this.psteps   = 0;
-    this.simspeed = BefSpeed.SUPERFAST;
+
+    this.init();
+
+    this.updateUI();
 }
 
-BefObject.prototype.Init = function() {
+BefObject.prototype.init = function() {
     this.state = BefState.INITIAL;
 
     let parse = this.parseBef(this.initial);
@@ -51,8 +66,21 @@ BefObject.prototype.Init = function() {
     this.psteps   = 0;
 };
 
+BefObject.prototype.setTimer = function() {
+    let me = this;
+
+    let delay = (this.simspeed === BefSpeed.SLOW) ? 50 : 0;
+
+    this.timer = setTimeout(function()
+    {
+        me.step();
+        if (me.state!==BefState.RUNNING) return;
+        me.setTimer();
+    }, delay);
+};
+
 BefObject.prototype.start = function() {
-    if (this.state === BefState.UNINIITIALIZED) this.Init();
+    if (this.state === BefState.EDIT) { this.finishEdit(); return; }
 
     if (this.delta[0]===0 && this.delta[1]===0) {
         this.updateUI();
@@ -68,34 +96,27 @@ BefObject.prototype.start = function() {
     this.setTimer();
 };
 
-BefObject.prototype.setTimer = function() {
-    let me = this;
-
-    let delay = (this.simspeed === BefSpeed.SLOW) ? 50 : 0;
-
-    this.timer = setTimeout(function()
-    {
-        me.step();
-        if (me.state!==BefState.RUNNING) return;
-        me.setTimer();
-    }, delay);
-};
-
 BefObject.prototype.stop = function() {
     this.state = BefState.PAUSED;
     clearTimeout(this.timer);
-    // pause
+
+    this.updateUI();
+    this.updateDisplay();
+};
+
+BefObject.prototype.finishRun = function() {
+    this.state = BefState.FINISHED;
+    clearTimeout(this.timer);
 
     this.updateUI();
     this.updateDisplay();
 };
 
 BefObject.prototype.reset = function() {
+    if (this.state === BefState.EDIT) { this.abortEdit(); return; }
     if (this.state === BefState.RUNNING) this.stop();
 
-    this.state = BefState.INITIAL;
-    this.Init();
-    this.state = BefState.INITIAL;
+    this.init();
 
     this.updateUI();
     this.updateDisplay();
@@ -103,15 +124,44 @@ BefObject.prototype.reset = function() {
 
 BefObject.prototype.incSpeed = function() {
 
-         if (this.simspeed === BefSpeed.SLOW)      this.simspeed = BefSpeed.NORMAL;
-    else if (this.simspeed === BefSpeed.NORMAL)    this.simspeed = BefSpeed.FAST;
-    else if (this.simspeed === BefSpeed.FAST)      this.simspeed = BefSpeed.SUPERFAST;
-    else if (this.simspeed === BefSpeed.SUPERFAST) this.simspeed = BefSpeed.MAX;
-    else if (this.simspeed === BefSpeed.MAX)       this.simspeed = BefSpeed.SLOW;
+    this.simspeed = BefSpeed.get((this.simspeed.val + 1) % (BefSpeed.max()+1));
 
     this.updateUI();
 };
 
+BefObject.prototype.startEdit = function() {
+    if (this.state === BefState.RUNNING) this.stop();
+
+    this.pnlEditArea.value = this.getDisplayRaw();
+
+    this.pnlEditArea.style.width  = this.pnlCode.clientWidth + 'px';
+    this.pnlEditArea.style.height = this.pnlCode.clientHeight + 'px';
+
+    this.state = BefState.EDIT;
+
+    this.updateUI();
+};
+
+BefObject.prototype.finishEdit = function() {
+    if (this.state !== BefState.EDIT) return;
+
+    this.initial = this.pnlEditArea.value;
+    this.init();
+
+    this.updateUI();
+    this.updateDisplay();
+};
+
+BefObject.prototype.abortEdit = function() {
+    if (this.state !== BefState.EDIT) return;
+
+    this.pnlEditArea.value = '';
+    this.init();
+
+    this.updateUI();
+    this.updateDisplay();
+};
+
 BefObject.prototype.step = function() {
 
     if (this.simspeed === BefSpeed.NORMAL || this.simspeed === BefSpeed.SLOW) {
@@ -160,7 +210,7 @@ BefObject.prototype.stepSingle = function() {
 
     if (this.delta[0]===0 && this.delta[1]===0) {
         console.log('Finished in ' + this.psteps + ' steps');
-        this.stop();
+        this.finishRun();
     }
 };
 
@@ -252,16 +302,63 @@ BefObject.prototype.gridget_i = function(x,y)   { if (x < 0 || y < 0 || x >= thi
 
 BefObject.prototype.updateUI = function() {
 
-    classListSet(this.btnStart, 'ctrl_btn_disabled', this.state === BefState.RUNNING || this.state === BefState.PAUSED);
-    classListSet(this.btnStop,  'ctrl_btn_disabled', this.state === BefState.UNINIITIALIZED || this.state === BefState.INITIAL);
-    classListSet(this.btnReset, 'ctrl_btn_disabled', this.state === BefState.UNINIITIALIZED || this.state === BefState.INITIAL);
-
-    classListSet(this.pnlBottom, 'b93rnr_outpanel_hidden', this.state === BefState.UNINIITIALIZED || this.state === BefState.INITIAL);
+    switch (this.state) {
+        case BefState.INITIAL:
+            cssCtrlState(this.btnStart,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnSpeed,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnStop,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnReset,    'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnEdit,     'ctrl_btn_disabled',      true);
+            cssCtrlState(this.pnlBottom,   'generic_collapsed',      false);
+            cssCtrlState(this.pnlEditArea, 'generic_collapsed',      false);
+            cssCtrlState(this.pnlCode,     'generic_collapsed',      true);
+            break;
+        case BefState.RUNNING:
+            cssCtrlState(this.btnStart,    'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnSpeed,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnStop,     'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnReset,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnEdit,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.pnlBottom,   'generic_collapsed',      true);
+            cssCtrlState(this.pnlEditArea, 'generic_collapsed',      false);
+            cssCtrlState(this.pnlCode,     'generic_collapsed',      true);
+            break;
+        case BefState.PAUSED:
+            cssCtrlState(this.btnStart,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnSpeed,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnStop,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnReset,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnEdit,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.pnlBottom,   'generic_collapsed',      true);
+            cssCtrlState(this.pnlEditArea, 'generic_collapsed',      false);
+            cssCtrlState(this.pnlCode,     'generic_collapsed',      true);
+            break;
+        case BefState.FINISHED:
+            cssCtrlState(this.btnStart,    'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnSpeed,    'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnStop,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnReset,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnEdit,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.pnlBottom,   'generic_collapsed',      true);
+            cssCtrlState(this.pnlEditArea, 'generic_collapsed',      false);
+            cssCtrlState(this.pnlCode,     'generic_collapsed',      true);
+            break;
+        case BefState.EDIT:
+            cssCtrlState(this.btnStart,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnSpeed,    'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnStop,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.btnReset,    'ctrl_btn_disabled',      true);
+            cssCtrlState(this.btnEdit,     'ctrl_btn_disabled',      false);
+            cssCtrlState(this.pnlBottom,   'generic_collapsed',      false);
+            cssCtrlState(this.pnlEditArea, 'generic_collapsed',      true);
+            cssCtrlState(this.pnlCode,     'generic_collapsed',      false);
+            break;
+    }
 
     this.btnSpeed.innerHTML = this.simspeed.str;
 };
 
-BefObject.prototype.updateDisplay = function() {
+BefObject.prototype.getDisplayHTML = function() {
     let str = '';
     for (let y=0; y < this.height; y++) {
         for (let x=0; x < this.width; x++) {
@@ -278,7 +375,22 @@ BefObject.prototype.updateDisplay = function() {
         }
         str += '<br/>';
     }
-    this.pnlCode.innerHTML = str;
+    return str;
+};
+
+BefObject.prototype.getDisplayRaw = function() {
+    let str = '';
+    for (let y=0; y < this.height; y++) {
+        for (let x=0; x < this.width; x++) {
+            str += String.fromCharCode(this.code[y][x]);
+        }
+        str += '\n';
+    }
+    return str;
+};
+
+BefObject.prototype.updateDisplay = function() {
+    this.pnlCode.innerHTML = this.getDisplayHTML();
 
     this.pnlOutput.innerHTML = htmlescape(this.output);
 
@@ -307,13 +419,16 @@ BefObject.prototype.parseBef = function(str) {
     return [result, max, result.length];
 };
 
-function classListSet(e, cls, active) {
-    if (active) {
-        if (e.classList.contains(cls)) return;
-        e.classList.add(cls);
-    } else {
+function cssCtrlState(e, cls, state) {
+
+    if (e === undefined) return;
+
+    if (state) {
         if (!e.classList.contains(cls)) return;
         e.classList.remove(cls);
+    } else {
+        if (e.classList.contains(cls)) return;
+        e.classList.add(cls);
     }
 }
 
@@ -334,9 +449,19 @@ window.onload = function ()
 
         let befungeObject = new BefObject(elem);
 
-        befungeObject.btnStart.onclick = function () { if (befungeObject.btnStart.classList.contains('ctrl_btn_disabled')) return; befungeObject.start(); };
-        befungeObject.btnStop.onclick  = function () { if (befungeObject.btnStop.classList.contains('ctrl_btn_disabled'))  return; befungeObject.stop(); };
-        befungeObject.btnReset.onclick = function () { if (befungeObject.btnReset.classList.contains('ctrl_btn_disabled')) return; befungeObject.reset(); };
-        befungeObject.btnSpeed.onclick = function () { if (befungeObject.btnSpeed.classList.contains('ctrl_btn_disabled')) return; befungeObject.incSpeed(); };
+        if (befungeObject.btnStart !== undefined)
+            befungeObject.btnStart.onclick = function () { if (befungeObject.btnStart.classList.contains('ctrl_btn_disabled')) return; befungeObject.start(); };
+
+        if (befungeObject.btnStop !== undefined)
+            befungeObject.btnStop.onclick  = function () { if (befungeObject.btnStop.classList.contains('ctrl_btn_disabled'))  return; befungeObject.stop(); };
+
+        if (befungeObject.btnReset !== undefined)
+            befungeObject.btnReset.onclick = function () { if (befungeObject.btnReset.classList.contains('ctrl_btn_disabled')) return; befungeObject.reset(); };
+
+        if (befungeObject.btnSpeed !== undefined)
+            befungeObject.btnSpeed.onclick = function () { if (befungeObject.btnSpeed.classList.contains('ctrl_btn_disabled')) return; befungeObject.incSpeed(); };
+
+        if (befungeObject.btnEdit !== undefined)
+            befungeObject.btnEdit.onclick  = function () { if (befungeObject.btnEdit.classList.contains('ctrl_btn_disabled')) return; befungeObject.startEdit(); };
     }
 };
\ No newline at end of file
diff --git a/www/fragments/befunge93_runner.php b/www/fragments/befunge93_runner.php
index 3f37bcf..67591dc 100644
--- a/www/fragments/befunge93_runner.php
+++ b/www/fragments/befunge93_runner.php
@@ -1,9 +1,13 @@
 <?php
 require_once (__DIR__ . '/../internals/base.php');
 
-global $PARAM_CODE;
-global $PARAM_URL;
-global $PARAM_INTERACTIVE;
+global $PARAM_BEFUNGE93RUNNER;
+
+$code        = $PARAM_BEFUNGE93RUNNER['code'];
+$url         = $PARAM_BEFUNGE93RUNNER['url'];
+$interactive = $PARAM_BEFUNGE93RUNNER['interactive'];
+$initspeed   = $PARAM_BEFUNGE93RUNNER['speed'];
+$editable    = $PARAM_BEFUNGE93RUNNER['editable'];
 
 function fmtBef($str) {
 	$str = htmlspecialchars($str);
@@ -18,25 +22,31 @@ function fmtBef($str) {
 
 $result = '';
 
-if ($PARAM_INTERACTIVE) {
-	$result .= '<div class="bce_code b93rnr_base">' . "\n";
-	$result .= '	<div class="bce_code_data b93rnr_data" data-befcode="' . base64_encode($PARAM_CODE) . '">' . fmtBef($PARAM_CODE) . '</div>' . "\n";
+
+if ($interactive) {
+	$speed_attr = '';
+	if (isset($initspeed) && $initspeed != NULL && $initspeed>0) $speed_attr = ' data-b93rnr_initialspeed="'.$initspeed.'" ';
+	$code_attr  = '';
+	$code_attr = 'data-b93rnr_code="' . base64_encode($code) . '"';
+
+	$result .= '<div class="bce_code b93rnr_base" ' . $speed_attr . '>' . "\n";
+	$result .= '	<div class="bce_code_data b93rnr_data" '.$code_attr.'>' . fmtBef($code) . '</div>' . "\n";
+	$result .= '	<textarea class="bce_code_editarea b93rnr_editarea generic_collapsed"></textarea>' . "\n";
 	$result .= '	<div class="bce_code_ctrl">' . "\n";
 	$result .= '		<div class="ctrl_btn_left">' . "\n";
 	$result .= '			<div class="ctrl_btn_group">' . "\n";
 	$result .= '				<div class="ctrl_btn ctrl_btn_ll b93rnr_start">Start</div>' . "\n";
-	$result .= '				<div class="ctrl_btn ctrl_btn_rr b93rnr_speed">3+</div>' . "\n";
+	$result .= '				<div class="ctrl_btn ctrl_btn_rr b93rnr_speed">??</div>' . "\n";
 	$result .= '			</div>' . "\n";
 	$result .= '			<div class="ctrl_btn b93rnr_pause ctrl_btn_disabled">Pause</div>' . "\n";
 	$result .= '			<div class="ctrl_btn b93rnr_reset ctrl_btn_disabled">Reset</div>' . "\n";
 	$result .= '		</div>' . "\n";
-	if ($PARAM_URL !== '') {
-		$result .= '		<div class="ctrl_btn_right">' . "\n";
-		$result .= '			<a class="ctrl_btn" href="' . $PARAM_URL . '" download target="_blank">Download</a>' . "\n";
-		$result .= '		</div>' . "\n";
-	}
+	$result .= '		<div class="ctrl_btn_right">' . "\n";
+	if ($editable && $interactive) $result .= '			<div class="ctrl_btn b93rnr_edit">Edit</div>' . "\n";
+	if ($url !== '') $result .= '			<a class="ctrl_btn" href="' . $url . '" download target="_blank">Download</a>' . "\n";
+	$result .= '		</div>' . "\n";
 	$result .= '	</div>' . "\n";
-	$result .= '	<div class="bce_code_out b93rnr_outpanel b93rnr_outpanel_hidden">' . "\n";
+	$result .= '	<div class="bce_code_out b93rnr_outpanel generic_collapsed">' . "\n";
 	$result .= '		<div class="bce_code_out_left">' . "\n";
 	$result .= '			<b>Output:</b>' . "\n";
 	$result .= '			<div class="bce_code_out_text b93rnr_output"></div>' . "\n";
@@ -53,13 +63,11 @@ if ($PARAM_INTERACTIVE) {
 else
 {
 	$result .= '<div class="bce_code">' . "\n";
-	$result .= '	<div class="bce_code_data">' . fmtBef($PARAM_CODE) . '</div>' . "\n";
+	$result .= '	<div class="bce_code_data">' . fmtBef($code) . '</div>' . "\n";
 	$result .= '	<div class="bce_code_ctrl">' . "\n";
-	if ($PARAM_URL !== '') {
-		$result .= '		<div class="ctrl_btn_right">' . "\n";
-		$result .= '			<a class="ctrl_btn" href="' . $PARAM_URL . '" download target="_blank">Download</a>' . "\n";
-		$result .= '		</div>' . "\n";
-	}
+	$result .= '		<div class="ctrl_btn_right">' . "\n";
+	if ($url !== '') $result .= '			<a class="ctrl_btn" href="' . $url . '" download target="_blank">Download</a>' . "\n";
+	$result .= '		</div>' . "\n";
 	$result .= '	</div>' . "\n";
 	$result .= '</div>' . "\n";
 }
diff --git a/www/fragments/blogview_euler_single.php b/www/fragments/blogview_euler_single.php
index 9de4ba7..4a380b6 100644
--- a/www/fragments/blogview_euler_single.php
+++ b/www/fragments/blogview_euler_single.php
@@ -47,12 +47,18 @@ $max = ceil($max / 20) * 20;
 
         <b>Solution:</b>
 		<?php
-            global $PARAM_CODE;
-            global $PARAM_URL;
-            $PARAM_CODE = file_get_contents($problem['file_code']);
-            $PARAM_URL = $problem['url_raw'];
-            $PARAM_INTERACTIVE = !$problem['abbreviated'];
+		    global $PARAM_BEFUNGE93RUNNER;
+		    $PARAM_BEFUNGE93RUNNER =
+			[
+				'code'        => file_get_contents($problem['file_code']),
+				'url'         => $problem['url_raw'],
+				'interactive' => !$problem['abbreviated'],
+				'speed'       => null,
+				'editable'    => false,
+			];
             echo require (__DIR__ . '/../fragments/befunge93_runner.php');
+
+            if ($problem['abbreviated']) echo '<i>This program is too big to display/execute here, click [download] to get the full program. </i><br/>';
 		?>
         <br/>
 
@@ -67,7 +73,7 @@ $max = ceil($max / 20) * 20;
             </tr>
             <tr>
                 <td><b>Execution time</b> (<a href="/programs/view/BefunGen">BefunExec</a>):</td>
-                <td><?php echo $problem['time'] . ' ms <i>(=' . number_format(($problem['steps']/$problem['time'])/1000, 2, '.', '') . ' MHz)</i>'; ?></td>
+                <td><?php echo $problem['time'] . ' ms <i>(=' . (($problem['time']===0) ? '?' : number_format(($problem['steps']/$problem['time'])/1000, 2, '.', '')) . ' MHz)</i>'; ?></td>
             </tr>
             <tr>
                 <td><b>Program size:</b></td>
diff --git a/www/fragments/footer.php b/www/fragments/footer.php
index c2d05ff..fc578d2 100644
--- a/www/fragments/footer.php
+++ b/www/fragments/footer.php
@@ -1,4 +1,4 @@
 <div id="footerdiv" class="content-responsive">
     <hr />
-    made with vanilla PHP and MySQL, no frameworks, no bootstrap, no bullshit
+    made with vanilla PHP and MySQL, no frameworks, no bootstrap, no unnecessary javascript
 </div>
\ No newline at end of file
diff --git a/www/internals/ParsedownCustom.php b/www/internals/ParsedownCustom.php
index 57d4f25..b64e70b 100644
--- a/www/internals/ParsedownCustom.php
+++ b/www/internals/ParsedownCustom.php
@@ -22,15 +22,36 @@ class ParsedownCustom extends ParsedownExtra
 
 		$Block['custom'] = false;
 
-		if (isset($Block['element']['text']['attributes']) && in_array('language-befungerunner', $Block['element']['text']['attributes']))
+		if (isset($Block['element']['text']['attributes']))
 		{
-			$Block['element']['handler'] = 'handleBef93';
-			$Block['custom'] = true;
-		}
-		else if (isset($Block['element']['text']['attributes']) && in_array('language-bfjoustrunner', $Block['element']['text']['attributes']))
-		{
-			$Block['element']['handler'] = 'handleBFJoust';
-			$Block['custom'] = true;
+			foreach ($Block['element']['text']['attributes'] as $attr)
+			{
+				$spl = explode('__', $attr);
+
+				if ($spl[0] === 'language-befungerunner')
+				{
+					$Block['element']['handler'] = 'handleBef93';
+					$Block['custom'] = true;
+					$Block['element']['text']['b93_speed'] = null;
+					$Block['element']['text']['b93_interactive'] = true;
+					$Block['element']['text']['b93_editable'] = true;
+
+					foreach ($spl as $param)
+					{
+						if (startsWith($param, 'speed-'))       $Block['element']['text']['b93_speed']       = intval( substr($param, strlen('speed-')));
+						if (startsWith($param, 'interactive-')) $Block['element']['text']['b93_interactive'] = boolval(substr($param, strlen('interactive-')));
+						if (startsWith($param, 'editable-'))    $Block['element']['text']['b93_editable']    = boolval(substr($param, strlen('editable-')));
+					}
+
+					return $Block;
+				}
+				else if ($spl[0] === 'language-bfjoustrunner')
+				{
+					$Block['element']['handler'] = 'handleBFJoust';
+					$Block['custom'] = true;
+					return $Block;
+				}
+			}
 		}
 
 		return $Block;
@@ -60,14 +81,15 @@ class ParsedownCustom extends ParsedownExtra
 
 	protected function handleBef93(array $Element)
 	{
-		global $PARAM_CODE;
-		global $PARAM_URL;
-		global $PARAM_INTERACTIVE;
-
-		$PARAM_CODE = $Element['text'];
-		$PARAM_URL = '';
-		$PARAM_INTERACTIVE = true;
-
+		global $PARAM_BEFUNGE93RUNNER;
+		$PARAM_BEFUNGE93RUNNER =
+		[
+			'code'        => $Element['text'],
+			'url'         => '',
+			'interactive' => $Element['b93_interactive'],
+			'speed'       => $Element['b93_speed'],
+			'editable'    => $Element['b93_editable'],
+		];
 		return require (__DIR__ . '/../fragments/befunge93_runner.php');
 	}
 }
\ No newline at end of file
diff --git a/www/internals/blog.php b/www/internals/blog.php
index 933bcdc..8ba186f 100644
--- a/www/internals/blog.php
+++ b/www/internals/blog.php
@@ -26,6 +26,7 @@ class Blog
 			[ 'id' => 8,  'date' => '2014-11-05', 'visible' => true,  'title' => 'Rapla Enhancement Script',               'fragment' => 'rapla_css.md',       'type' => 'markdown', 'cat' => 'blog' ],
 			[ 'id' => 20, 'date' => '2015-01-09', 'visible' => true,  'title' => 'More Befunge with Project Euler',        'fragment' => 'more_euler.md',      'type' => 'markdown', 'cat' => 'log'  ],
 			[ 'id' => 9,  'date' => '2016-10-22', 'visible' => true,  'title' => 'A complete sudoku solver in Befunge-93', 'fragment' => 'sudoku_befunge.md',  'type' => 'markdown', 'cat' => 'blog' ],
+			[ 'id' => 21, 'date' => '2018-01-02', 'visible' => true,  'title' => 'A simple javascript befunge-93 runner',  'fragment' => 'js_befrunner.md',    'type' => 'markdown', 'cat' => 'blog' ],
 		];
 
 		return array_map('self::completeSingle', $all);
diff --git a/www/statics/blog/js_befrunner.md b/www/statics/blog/js_befrunner.md
new file mode 100644
index 0000000..f9ec329
--- /dev/null
+++ b/www/statics/blog/js_befrunner.md
@@ -0,0 +1,41 @@
+Primarily for my [project euler solutions](/blog/1/Project_Euler_with_Befunge) I wrote a small
+javascript befunge-93 runner (without befunge93 size restrictions, as with most stuff on this site).
+
+The code is note really optimized and will only run on newer browsers, but it's good enough to play a bit around.
+
+Press **[Start]** to run the code, **[Edit]** to change the code and change the interpreter speed with the button on the right side of the **[Start]** button.
+
+
+~~~befungerunner__speed-2
+0".omed s"v
+          "                       >v
+          i                        8
+                                   4
+          s             >       > ^*
+          i    >99+0g1+#^_77+0g#^_188+0p099+0p>  v
+          h    ^        <          #            <
+          T    >88+0g1+#^_66+0g#^_088+0p01-99+0p^
+          "    ^        <         <#             #<
+>         v    >99+0g1-#^_77+0g8-#^_01-88+0p099+0p^
+|   >#:>#,<    ^        <         <#            <2
+               >88+0g1-#^_66+0g8-#^_088+0p199+0p^2
+>0>:"#"\0p:5 v ^                   $             g
+v_^#!\+1\!`+4< ^p0+77+g0+99g0+77<  >66+0g1+v     v
+>1-:"#"\v      >66+0g88+0g+66+0p^  v+1g0+77<     8
+|`0:p+19<      ^                   g             4
+>:"#"\0\p:v>   ^<                  -             *
+|\+1\!`+45<^p0+<               v" "_"@"v         -
+>1-:"#"\ v>p099^^     <        >66+v+66<         #
+|`0:p\+19<^0+88<^      p+1g0+77+1g0<       >" " #< v
+$>-66+0p077+0p1^ vp+2g0+67+2g0+56 < pp0+67:0+560<|#<
+01               :    #    v    p0 +76+1g< >"#" #< ^
+>^               >65+0g6- #v_01-65+0p67+0^
+                      ^ $ <>76+0gv#
+                          ^     <> 7-v
+                                ^_v#!<
+                                  #
+                           >+56+0p^
+                           ^1g0+56<
+~~~
+
+You can find the code either directly by looking at the file *blogpost_bef93runner.js* on this site, or on [github](https://github.com/Mikescher/www.mikescher.com).
\ No newline at end of file
diff --git a/www/statics/euler/Euler_Problem-008_explanation.md b/www/statics/euler/Euler_Problem-008_explanation.md
index 80e0ff6..fdc4aa7 100644
--- a/www/statics/euler/Euler_Problem-008_explanation.md
+++ b/www/statics/euler/Euler_Problem-008_explanation.md
@@ -1 +1,3 @@
-These kinds of problems are fun in Befunge because you can just copy the input into your program and it becomes a part of your source code.
\ No newline at end of file
+These kinds of problems are fun in Befunge because you can just copy the input into your program and it becomes a part of your source code.
+
+The rest is just walking through all possible values and printing the largest
\ No newline at end of file