Code
Reading code in a blog post, you have to find the line the author means. A code slide removes that step. It shows real source, syntax highlighted, with its filename and language, and adds a 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. Nothing inside a slide scrolls, so each one holds a focused excerpt, and a longer file is taught across several slides instead of crammed into one.
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.