At the end of the previous step, 90 degree rotational symmetry should have been set and the Sympathy window should appear as below. The top left hand corner square (called a "cell" in Sympathy) has a dashed line inside to show it is selected:
The next task is to create the 20 black cells (called "blocks"). Because of the 90 degree symmetry, we can do this by turning just 5 white cells into black cells - Sympathy adds the symmetrical blocks automatically.
To turn a white cell into a block, we first need to select the cell to be changed. There are two ways of doing this:
Use one of these techniques to select the fourth cell in the top row (the one numbered 4 in the corner). When you have done this, the status bar should indicate that Cell: row 1, col 4 is selected and the grid should appear as shown at the start of the next step.
Selecting parts of the Grid with the Mouse
Selecting parts of the Grid with the Keyboard
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Last updated: $Date: 2010/04/10 16:58:54 $
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