**After Effects** renders frames into memory (**RAM**) so a comp can play back smoothly in real time; the green bar under the timeline shows cached frames. **Press the spacebar** (or **0 on the numeric keypad**) to preview. What used to be called "RAM Preview" is now just **Preview**. The **Timeline** and **Current Time Indicator** showing the **green line** indicating a fully rendered **Preview**: ![[Pasted image 20260606160519.png]] ### **Play** and **Stop** the Animation with the **Space Bar** ### **Preview** with the **Numeric Keypad 0**