Argh. The issue linked above, Missing "Select All" capability for Serial Monitor
has been locked as "too heated". It appears that not only can we not comment, we cannot follow progress because nothing is visibly posted! I have to subscribed to see if I can learn anything that way.
I can see why it's a heated discussion. It seems that the Apple Lisa had these features in 1983 and Windows in 1992. Even a simple program like PuTTY has had this seemingly forever, probably since 1998.