Render every row of a table root pinned, and drop the comments restating renderDraws and columnDraws

drawfence.go

@@ -75,7 +75,6 @@ func (c *drawCheck) checkDraws(path string, n node) error {
 	return nil
 }
 
-// renderDraws gathers the reads one render of t makes.
 func renderDraws(t *template) *drawWalk {
 	w := newDrawWalk()
 	for _, e := range renderEdges(t) {
@@ -179,7 +178,6 @@ func refRead(n node, label string) (arm, bool) {
 // checkColumnDraws fences a record's columns as one render.
 func checkColumnDraws(t *template, columns []string) error { return columnDraws(t, columns).check() }
 
-// columnDraws gathers the reads one record render of t's columns makes.
 func columnDraws(t *template, columns []string) *drawWalk {
 	w := newDrawWalk()
 	for _, name := range columns {

drawfence_test.go

@@ -128,6 +128,12 @@ func renderRoot(s *session, t *template) {
 	switch {
 	case t.table != nil:
 		render(s, t.table, sc)
+		for r := 0; r < t.table.rowCount(); r++ {
+			var set holdSet
+			sc := renderScope{set: &set}
+			sc.hold().pins.pin(t.table, r)
+			render(s, t.table.wholeRow, sc)
+		}
 	case t.cellOf != nil:
 		sc.t, sc.row = t.cellOf, t.cellRow
 		render(s, t, sc)