A month ago I wrote what I would call a professional post on a social media / networking site. I had drafted it in a text editor first, and when I pasted it to

A month ago I wrote what I would call a professional post on a social media / networking site. I had drafted it in a text editor first, and when I pasted it to post, I found there was a character limit I'd run afoul of and was forced to edit. It was actually very helpful to be forced to clarify and shorten what I'd written. I'd like to find a way to recreate the forced restriction (especially when discovered only after I thought I'd made it concise already).