INDICATORS ON D4 YOU SHOULD KNOW

*Why "D4"?  I typically get requested,  and gets jumbled with A5 (which can be a climbing grade), and D5 (which stood for "Deuce5"), two makes I are actually associated with in past times.  My nickname in Yosemite was "Deucey", coined by Grant Hiskes  who mangled my Friesland ancestral identify "Middendorf" to "Dusseldorf",  and Deuce4 is my r