Callout/Admonitions

I think callout / admonition boxes helps to visually distinguish some parts of rem documents from the rest of the text. This will make skimming some longer texts faster so that you get to the main ideas easily. Textbooks have these as well where they insert key points into boxes before the chapter, after the chapter, and even throughout the chapter. I believe it would be useful for RemNote to have these.

There can be different types of boxes but perhaps just start off small and easy. The differenct types of boxes should have icons and colors that distinguish them from each other.

For example: red for caution, then the icon can be a warning sign.

Yellow for additional notes and the icon can be sticky note.

The admonitions boxes should also have the option to be collapsible like nested rems. When they collapse, only the colored title bar should remain. Having the boxes look a bit 3d by adding a shadow effect will really make them pop out.

Obsidian has callouts and admonitions and so does Amboss. I've attached some images here for reference. Later on if you want, you can even add in the functionality of customizing the admonition icons and colors (there's an Obsidian plugin that allows this) But honestly a selected handful of types and colors should be enough.