Thank you for your response. To confirm I did mean a custom list. I’ve created a card with an image header and a text component for for story/blog. Restricting to a single line (fixed width) is too short/restrictive but I’d like to limit to a specific number of characters or lines say around 5 lines. If the post exceeds this I then want to append a “More” action to link to a detail page. A bit like FB posts.
I think from what you’ve said this currently isn’t possible but I’d say is required behaviour for any social type App etc.