-** When a paragraph ends with a newline, compute correctly the height of the extra row.
-** Cleanup after complete metrics
- Then the following can be done:
- + remove hack in InsetMathNest::drawSelection
- + remove Cursor::inCoordCache?
+When the height of the current paragraph changes, there is no need for
+a full screen update. Only the rows after the current one need to have
+their position recomputed.
+
+This is also true when scrolling (how to do that?)
+
+*** redoParagraph
+
+It should be possible to check whether the new row is the same as the
+old one and keep its changed() status in this case. This would reduce
+a lot the amount of stuff to redraw.
+
+** Put labels and friends in the Row as elements
+
+It should not be necessary to access the Paragraph object to draw.
+Adding the static elements to Row is a lot of work, but worth it IMO.