Greetings all. We drew the stairs main body. But there are a few things we need to do before keep going with other elements such as a stair handrail. So, in today's class we will inspect and correct any mistakes in our stairs. Let's get started. Once we finish drawing the stair the the section frame becomes unnecessary. This means that we can delete it and then inspect the results in our model. We opened a layer menu and closed all the other layers, so that we can inspect the stair without obstacles. Then we start checking if there are any actual lines to delete. This checking process has two reasons. One because we should keep our model as clear as possible so the person who works on this model after us, won't be confused by the actual lines. And a second reason is that unnecessary objects will increase the size of our file. After checking, we can group the stairs. Then we make all the layer visible, look at our results, check that everything is in the correct position, and we finish drawing the stairs. Today we fix some little problem that usually appear on complex drawings such as stairs. Now with everything fixed, we can proceed adding more details. We are done for today, goodbye.