diff --git a/lib/ice-coder.js b/lib/ice-coder.js
index 868747d..1068d33 100644
--- a/lib/ice-coder.js
+++ b/lib/ice-coder.js
@@ -1764,7 +1764,7 @@ var ICEcoder = {
 
 	// Show the help screen
 	helpScreen: function() {
-		top.get('mediaContainer').innerHTML = '<iframe src="lib/help.php" class="whiteGlow" style="width: 800px; height: 450px"></iframe>';
+		top.get('mediaContainer').innerHTML = '<iframe src="lib/help.php" class="whiteGlow" style="width: 800px; height: 470px"></iframe>';
 		top.ICEcoder.showHide('show',top.get('blackMask'));
 	},
 
@@ -2512,6 +2512,19 @@ var ICEcoder = {
 				top.ICEcoder.jumpToDefinition();
 	        		return false;
 
+			// CTRL + Tab (lock/unlock file manager)
+			} else if(key==223 && (evt.ctrlKey||top.ICEcoder.cmdKey)) {
+				top.ICEcoder.lockUnlockNav();
+				ICEcoder.changeFilesW(top.ICEcoder.lockedNav ? 'expand' : 'contract');
+				return false;
+
+			// CTRL + . (Fold/unfold current line)
+			} else if(key==190 && (evt.ctrlKey||top.ICEcoder.cmdKey)) {
+				var cM = ICEcoder.getcMInstance();
+				var line = cM.getCursor().line;
+				cM.getLine(line).indexOf("{")>-1
+				? top.contentFrame.codeFoldBrace(cM, line) : top.contentFrame.codeFoldTag(cM, line);
+
 			// ESC in content area (Comment/Uncomment line)
        			} else if(key==27 && area == "content") {
 				top.ICEcoder.lineCommentToggle();