a LOT of minor stuff

src/kernel/ui/WindowManager.hx

@@ -1,8 +1,12 @@
 package kernel.ui;
 
-import lib.TermWriteable;
+import kernel.ui.TermWriteable;
 import kernel.peripherals.Peripherals.Peripheral;
 
+/**
+	Responsable for creating window context, forwarding UI events to the context
+	and switching context to real screens.
+**/
 class WindowManager {
 	/**
 		Depends on: KernelEvents, Peripheral
@@ -45,9 +49,9 @@ class WindowManager {
 		});
 
 		KernelEvents.instance.onMouseUp.handle(params -> {
-			// if (currentMainContext != null) {
+			if (currentMainContext != null) {
 				currentMainContext.onMouseUpTrigger.trigger(params);
-			// }
+			}
 		});
 
 		KernelEvents.instance.onPaste.handle(text -> {