--- /dev/null
+/* The function 'setup_arrays sets the cell_type[i][j] to be DIELECTRIC
+if the material is non-metal. This function expands on that, checking if
+the adjactent cells are dielectrics, or metals, and if dielectric,
+whether or nor there is a boundary vertically, or horizontally between
+two different dielectrics. Doing this once, is much faster than doing it
+inside a loop, checking for all possibilities each time one needs to
+know. */
+
+#include "definitions.h"
+
+extern int width, height;
+extern unsigned char **oddity, **cell_type;
+extern double **Er;
+
+void check_for_boundaries(void)
+{
+}
+