@@ -121,13 +121,13 @@ function isEmpty( tableCell ) {
//
// In a table below:
-// +---+---+---+---+
-// | a | b | c | d |
-// +---+---+---+ +
-// | e | f | |
-// + +---+---+
-// | | g | h |
+// ┌───┬───┬───┬───┐
+// │ a │ b │ c │ d │
+// ├───┴───┼───┤ │
+// │ e │ f │ │
+// ├ ├───┼───┤
+// │ │ g │ h │
+// └───────┴───┴───┘
// Valid selections are these which create a solid rectangle (without gaps), such as:
// - a, b (two horizontal cells)