@ps2270 On Friday, when we were going over terms left in French in the TL, I suggested "in distemper" for the entry below. It still seems to me like the A-P is distinguishing laying down azur in oil from in distemper. The glossary has "distemper" as one of the possible translations of "destrempe(r)". Are you sure this doesn't fit here?
``` <id>p011r_1</id>
<head>Painting <m>esmail d’azur</m> in <m>oil</m></head>
<ab>This is a secret that is hardly known to <pro>common painters</pro>. Some take the most delicate they can & grind it with <m>ceruse</m>, which binds it, and next prick with an <tl>awl</tl> in several places the area they want to paint with <m>azur d’esmail</m>, in order that the <m>oil</m> enters & leaks in, & <add><fr>ne</fr></add> does not cause the <m>azure</m>, which in itself is heavy, to run. Others lay the panel flat & put down the <m>azure</m> on it, which is also done <fr>à destrempe</fr>. The main thing is to grind it well on <tl><m>marble</m></tl>, ```