+ENTER_DESCRIPTION(A2_engraver,
+/* descr */ "Part combine engraver for orchestral scores.
+
+The markings @emph{a2}, @emph{Solo} and @emph{Solo II}, are
+created by this engraver. It also acts upon instructions of the part
+combiner. Another thing that the this engraver, is forcing of stem,
+slur and tie directions, always when both threads are not identical;
+up for the musicexpr called @code{one}, down for the musicexpr called
+@code{two}.
+
+",
+/* creats*/ "TextScript",
+/* acks */ "grob-interface tie-interface note-head-interface ",
+/* reads */ "combineParts noDirection soloADue soloText soloIIText aDueText split-interval unison solo unisilence unirhythm",
+/* write */ "");