Subtitles of the Movie

Let's look at some techniques which allow us to experiment, and then if our experiments don't go the way we wish they had, to undo the results and go back to the way things were before things went wrong. Start off by creating a couple of spheres, click on sphere here and then just click and hold and drag and release, click and hold and drag and release and right click. Now this sphere here is selected right now and we're going to delete it. We can go up to the edit menu and go to delete or just hit the delete key and that sphere is deleted. Now if we decide we didn't want to delete it, we can go back up to edit and we can choose undo delete or we can use Control Z and that's back. So that's our first line of defense, is the undo feature. Now for example this sphere is a greenish color, to change that I can click on this color box right here. Choose another color and click OK. That changes the color. Now what if I decide I don't like that, I go up to undo, It will undo the selection of that object or the creation of it but there is no undo for a color change. So, in order to address that, we have a second line of defense, hold and fetch. So we'll put a hold on this that essentially creates a snapshot of what I have got right now. Now if I go in here, click on this color box, change the color, I can go back up here and I can click on fetch. It’s asking me if I really want to fetch and that brings the color back. And fetch essentially restores the exact scene that you had whenever you did the hold and all its details. The limitation of hold and fetch is it only gives you one step backwards. Undo gives you a number of steps backwards you can see that here in preferences. On the general tab here is your number of undo’s and you can raise that if you want to. But fetch just gives you one step backwards. So if you want several steps backwards including features that may not be supported by undo, use the save as feature. So this file hasn't been saved yet, but I'll just save it and I am going to give it a file name ending in 01. You'll see why in just a minute, and save that. Now let me go in here, I am going to select this ball, click on the colors make it a different color, I kind like that, maybe I wanted to save it I am not sure, I am going to do save as and then click on the plus, what this will do is create a file name with the same name only the number will be incremented by 1. So now the file name ends in 02 as you can see up here in the upper left. So now I can keep experimenting, choose another color, perhaps save that if I think I might like that. Give it still another color and now I can go back to any of those previous colors just by bringing the file up. So both hold and fetch and frequent saving of your file with a new name, are both techniques that are useful for allowing you to recover from mistakes, or just to make it easy to go back to whichever experiment was most successful. ing you to recover from mistakes, or just to make it easy to go back to whichever experiment was most successful. rom the get go.