Given the task definition and input, reply with output. Given a text, write a compressed version of it in a single sentence.

Here we take a page from British constitutional history to understand how a practice can be become part of the accumulated historical constitution without this being the purpose of those who initiated the practice. The British Constitution remains, as is well known, famously unwritten.
We take a page from the well known, famously unwritten British constitution in order to understand how a practice can become part of the accumulated history without the purpose of those who initiated the practice.