Change this shot: an empty guidance box, the last request shown not pre-filled

trailer.html

@@ -1592,8 +1592,15 @@
     else if (s.drawing) tools = '<span class="busy">drawing…</span>';
     else if (stillFilming(s)) tools = '<span class="busy">filming…</span>';
     else if (EDITING === s.id) {
+      // An EMPTY box: this is guidance for the writer - what should happen,
+      // how the camera moves, what is said - and it applies the same whether
+      // the shot is spoken or silent. Everything not mentioned is kept. The
+      // last request is shown, not pre-filled, so it is not mistaken for the
+      // thing to change.
       tools = '<div style="width:100%"><textarea class="rough" id="rough" rows="3" placeholder="'
-        + 'What should change in this shot?">' + esc(s.rough || "") + '</textarea>'
+        + 'What should change in this shot? Direction, camera, what is done, or what is said - the writer keeps everything you do not mention.'
+        + '"></textarea>'
+        + (s.rough ? '<div class="tiny" style="margin:2px 0 6px">Last time you asked for: ' + esc(String(s.rough).slice(0, 240)) + '</div>' : '')
         + '<div class="tools"><button type="button" class="btn primary" data-rewrite="' + esc(s.id)
         + '">Rewrite this shot</button>'
         + '<button type="button" class="btn" data-cancel="1">Cancel</button></div></div>';