A sub-screen is one content area inside a program. You can also think of it as one section of the page layout.

For example, a common information display page could be divided like this:

• One area at the top for rotating images
• One area in the middle for the main video
• One area at the bottom for scrolling text

Those 3 areas are 3 different sub-screens.

When One Sub-screen Is Enough

If your program only needs to:

• Play one full-screen poster
• Play one full-screen video
• Show one full-screen web page

then one sub-screen is usually enough.

When You Need Multiple Sub-screens

If your program needs to show different types of content at the same time, for example:

• Images on the left and text on the right
• Video on top and announcement text below
• Main content in the center with a clock or weather in the corner

then you need to add or adjust sub-screens.

What to Do After the Program Is Created

After the program is created, you will usually face one of these two situations:

• If the layout is not right yet: continue with Sub-screen Edit
• If the layout is already fine: go straight to Material Intro

If you also want to adjust sub-screen background, transition animation, playback behavior, and similar settings, continue with Sub-screen Parameters.