A matter considered to be so obvious as not to require referral to a higher court for interpretation. Frequently without article, and attrib.
“acte clair, n.” OED Online. Oxford University Press, March 2017. Web. 8 May 2017.
I am so distracted since I am not in my little sanctuary of focusing on my work. It is so bad, I can barely spell (thank goodness for spell check). Now that I write this, I remember that last year was basically the same struggle.