@robtherunt@mastodon.green When writing your Toot, there is a “CW” button you can select to add a Content Warning. When you activate the button, another field appears above the edit field where you can enter some explanatory text that will be visible before the option to view the rest of the Toot. I don’t know Mastodon well enough yet to know what CWs people use, but I’d expect ones for violence/trauma/suicide etc. There is a similar ‘Mark image as sensitive’ option when sharing photos.