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+Unequal
+<p>
+Fill in the grid with numbers from 1 to the grid size, so that every
+number appears exactly once in each row and column, and so that all
+the <code>&lt;</code> signs represent true inequalities (i.e. the
+number at the pointed end is smaller than the number at the open end).
+<p>
+To place a number, click in a square to select it, then type the
+number on the keyboard. To erase a number, click to select a square
+and then press Backspace.
+<p>
+Right-click in a square and then type a number to add or remove the
+number as a pencil mark, indicating numbers that you think
+<em>might</em> go in that square.