Code
A code slide shows real source code, syntax highlighted, with its filename and language. What makes it different from code in a blog post is the pointer. As the narration speaks, the pointer moves through the code and highlights the exact identifier, call, condition, or return value being discussed, so your eyes are always on the line the voice is talking about.
Code slides stay small on purpose: about 20 lines at most, so each one holds a focused excerpt that fits on screen. A longer file is taught across several slides instead of crammed into one. If a block does run tall, the slide scrolls to keep the pointer in view.
Getting good code slides
Ask for a walkthrough of specific code and the explainer builds around it: paste code into the prompt, attach a file, or let your coding agent supply the real thing straight from your repository.