 Okay so this step is a short but very important one. We're going to look at organizing the material graph that we've created. I'm going to do that through the use of comments, comments are great so let's have a look at that. So this as I've said is a really simple material that we've created here but these materials can easily be made up of dozens and dozens of nodes, loads of different material expressions, mathematical equations and they can quickly get confusing especially because if you're not careful you can have all of your wires crossing over each other it can be really difficult to follow and I would strongly recommend using comments to avoid that. So what I'm going to do is just comment each of these nodes so that I know what they're for if I reopen this material in a few months and I forgot what everything's doing. So it is a little bit overkill for a material this simple but obviously I want to get you into the habit as early as possible. So this one here is the diffuse one. So making sure I've got it selected I will press C on my keyboard and that will create a new comment and you can see up here it's prompting me to give it a name so I'm going to call it diffuse press enter to save that and I find that if I've just got one in there it's a little bit bigger than I need it to be so I'm just going to shrink that down a little bit and then we'll create another one so select it press say this one is my roughness one and this one here is normal. So now I'll know what everything is for which is nice to know. Okay so what you can also do and this is really handy if you have got multiple nodes making up your diffuse which can happen you can group them together using comments so I could have selected them all pressed seeing it would have put them all in a group and then you can drag them around together which is really really useful so what I'm going to do now is just neaten this up a little bit like so I'm just going to pull this up there yeah so now everything's commented and when I come back to it I'll know exactly what each node is for so short simple step but an important one the next steps going to be a little longer and more complex because we're going to start introducing a much better way of working with materials which is through parameters and material instances so make sure you switch down for that one because we're going to step up the the difficulty a little bit thanks for watching if you really want to take your learning further than I can cover in this series then I highly recommend checking out plural site they have loads of really detailed video courses covering game art and game development using Unreal Engine 4 when I learned how to use Unreal a couple of years ago this is where I went and I log in regularly to take a new course and improve my skills I recommend checking out the introduction to Unreal Engine 4 course by Joshua Kinney this is really good and offers a good overview of what you can do in Unreal you can get a free 10 day trial by using my link in the video description and you get full access to all of their courses for that time at the end of your 10 days you can either subscribe for more or cancel totally up to you it's got to be worth a free trial though right I'd like to say a massive thank you to my patrons your support helps me to keep making videos like this one and I really appreciate each and every one of you it really blows my mind that people will support my channel and my work by pledging their money through patreon so again thank you all so so much if you aren't already a patron and you'd like to for your support then please go to patreon.com forward slash Shane Whittington