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Callouts ​

A callout is a coloured block inside a note for the part you don't want to skim past — a warning, a decision that's now locked, a rule you keep breaking.

Five types:

TypeUse it for
NoteQuiet context for future you
TipAdvice worth surfacing
ImportantSomething you must not lose
WarningPreventing a mistake
CautionA real risk if ignored

Each type has its own colour and icon, drawn from the same palette as the rest of MLW.

Adding one ​

Three ways, all in the note editor:

  • Slash command — type /note, /tip, /important, /warning, or /caution. The short forms /warn, /imp, /info, /danger and /callout work too.
  • Type it — type > [!tip] followed by a space and the block converts as you type.
  • From a selection — select text first, then use the slash command to wrap what you've already written.

Titles ​

Every callout has a title line. Leave it alone and it shows the type name ("Warning"). Type over it and you get whatever you want:

Founding rate is permanent Grandfathered for the life of the account, not 12 months.

You can also write a title and leave the body empty. That gives you a one-line rule, which is often all you need:

Never bundle a price change with a feature launch.

Changing the type ​

Click the icon on the left of the callout and pick a different type. The content stays where it is — no deleting and retyping.

What goes inside ​

Anything a note can hold: bold and italic, inline code, lists, links, [[wikilinks]], @task mentions, #tags, and highlights. A callout is a container, not a special text box.

To get out of an empty callout, press Backspace at the start of it.

How it's stored ​

Callouts are written as ordinary markdown:

> [!WARNING] Heads up
> Stripe descriptor is fixed once set.

This is the same syntax GitHub and Obsidian use. Two things follow from that:

  • Your notes stay plain markdown. Nothing proprietary is added to the file.
  • Callouts you write in MLW render as real callouts in Obsidian after exporting, and callouts written in Obsidian show up correctly in MLW.

On mobile ​

Callouts render on mobile too, in the same colours, in both the note editor and the Notes pane on Today. Writing one is a web thing for now — the mobile note editor is a plain markdown field, so you can type > [!TIP] by hand and it will render, but there's no slash menu or type picker there yet.