I am starting to learn UI and have reached the following point in the documentation:
"Using the UI Designer
If you went through the example above, you might have thought that this is a lot of code to do very basic things. You can significantly reduce the amount of boilerplate code by using the included visual UI editor.
Start by creating a new ‘User Interface’ file in your library. "
Can someone tell me where I can find the visual UI editor, and where is 'your library' and how do I create a 'User Interface file'
Many thanks. Paul B