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(* TOP CELL *) (* theme aliases goes here *) bgcolor=Darker[Blue]; fontcolor=White; fontfam="Helvetica"; fontsize=12; font=Italic; spaces={4,4}; align=Center; frame=All; output=Traditional; method=Automatic; (* NEXT CELL *) (* handlers from points 2 and 3 *) (* ALL OTHER CELLS *) (* all other code *) (* injected with hooks from points 2 and 3 *) 

(* TOP CELL *) (* theme aliases goes here *) bgcolor=Darker[Blue]; fontcolor=White; fontfam="Helvetica"; fontsize=12; font=Italic; spaces={4,4}; align=Center; frame=All; output=Traditional; method=Automatic; (* NEXT CELL *) (* handlers from points 2 and 3 *) (* may be injected with aliases from point 4 *)  (* ALL OTHER CELLS *) (* all other code *) (* injected with hooks and aliases *) (* from points 2 - 4 *) 

4. Leverage Up Your Coding Style With Theming

Most projects demand setting only a few options or style directives that are consistently sprinkled in a lot of places. Instead of repeating the same specs define those specs in alias variables and insert aliases everywhere they occur including the aforementioned styles and options handlers made in points 2 and 3. These would then be collected in a cell higher up from any dependent code. Doing this would enable making quick and consistent changes to behavior or theme from just one place in your file. Your hierarchy might look like below. As before it might be a good idea to set cells to Initialization Cell.

4. Go Further With Theming

Most projects demand setting only a few options or style directives that are consistently sprinkled in a lot of places. Instead of repeating the same specs define those specs in alias variables (a new feature in CSS does this) and insert aliases everywhere they occur including the aforementioned styles and options handlers made in points 2 and 3. These would then be collected in a cell higher up from any dependent code. Doing this would enable making quick and consistent changes to behavior or theme from just one place in your file. Your hierarchy might look like below. As before it might be a good idea to set cells to Initialization Cell.

2. Separate Presentation from Content

(* TOP CELL *) (* theme aliases goes here *) bgcolor=Darker[Blue]; fontcolor=White; fontfam="Helvetica"; fontsize=12; font=Italic; spaces={4,4}; align=Center; frame=All; output=Traditional; method=Automatic; (* NEXT CELL *) (* handlers from points 2 and 3 *) (* ALL OTHER CELLS *) (* code with injected hooks from points 2 and 3*) 

2. Separate Presentation and Behavior from Content

(* TOP CELL *) (* theme aliases goes here *) bgcolor=Darker[Blue]; fontcolor=White; fontfam="Helvetica"; fontsize=12; font=Italic; spaces={4,4}; align=Center; frame=All; output=Traditional; method=Automatic; (* NEXT CELL *) (* handlers from points 2 and 3 *) (* ALL OTHER CELLS *) (* all other code *) (* injected with hooks from points 2 and 3 *)