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+digraph Viewfile {

+node [ style = filled ];

+atoi [color=green];

+chkmalloc [color=green];

+close [color=green];

+error [color=blue];

+exit [color=blue];

+fclose [color=green];

+fgets [color=red];

+fopen [color=green];

+fprintf [color=blue];

+free [color=blue];

+free_list [color=blue];

+fstat [color=green];

+getopt [color=green];

+init_list [color=green];

+insert_list [color=green];

+main [color=green];

+makeargs [color=blue];

+makepairs [color=green];

+malloc [color=green];

+open [color=green];

+printf [color=red];

+read [color=green];

+rewind [color=green];

+viewline [color=green];

+viewlines [color=green];

+walk_list [color=green];

+write [color=green];

+fclose -> close [color=green];

+fgets -> fstat [color=green];

+fgets -> read [color=green];

+fopen -> open [color=green];

+printf -> write [color=green];

+main -> fgets [color=blue];

+main -> getopt [color=green];

+main -> makeargs [color=blue];

+main -> makepairs [color=green];

+main -> chkmalloc [color=green];

+main -> error [color=blue];

+main -> viewlines [color=green];

+makeargs -> chkmalloc [color=blue];

+makepairs -> atoi [color=green];

+makepairs -> init_list [color=green];

+makepairs -> insert_list [color=green];

+makepairs -> chkmalloc [color=green];

+free_list -> free [color=blue];

+init_list -> chkmalloc [color=green];

+insert_list -> chkmalloc [color=green];

+walk_list -> error [color=blue];

+walk_list -> viewline [color=green];

+chkmalloc -> malloc [color=green];

+chkmalloc -> error [color=blue];

+error -> exit [color=blue];

+error -> fprintf [color=blue];

+error -> error [color=blue];

+viewline -> fgets [color=red];

+viewline -> printf [color=red];

+viewline -> rewind [color=green];

+viewlines -> fclose [color=green];

+viewlines -> fopen [color=green];

+viewlines -> walk_list [color=green];

+viewlines -> viewline [color=blue];

+}