EDITING A GRID

Editing of the grid is assisted by a coloured cursor cell. Any editing commands you give are applied to the cursor cell and to its reflections as specified by the selected symmetry. Firstly, you must select the cell you wish to edit. Do this by pointing to it with the mouse and clicking the mouse button once, or you can use the cursor control keys if you prefer. Secondly, you will convert this cell to any one of  Fifteen different cell types .

There are two ways in which you can set the cell type:-
  • Repeated clicking of the mouse button will cycle you through the available cell types. Certain of the cell types may be skipped if they create an illegal situation. See  Error Conditions  for a description of how these errors occur, and how they are handled.

  • Mouse click one of the Cell Selection buttons on the left hand side of the screen. If you click a selection which is illegal for the cell in question, your request will not be honoured.