Windows 10:
Microsoft Edge corrupts Nyquist code when copied from "code" boxes in forum posts.
Leading spaces are encoded, (possibly as non-breaking space?) which creates invalid characters for the Nyquist interpreter.
Other characters may also be affected (not tested).
Firefox and Chrome:
Clicking the "Select All" link does not select all, it just scrolls to the top of the page.
Internet Explorer selects and copies the text as expected.