+* `#define SOFT_SERIAL_PIN D0`
+ * When using serial, define this. `D0` or `D1`,`D2`,`D3`,`E6`.
+
+* `#define MATRIX_ROW_PINS_RIGHT { <row pins> }`
+* `#define MATRIX_COL_PINS_RIGHT { <col pins> }`
+ * If you want to specify a different pinout for the right half than the left half, you can define `MATRIX_ROW_PINS_RIGHT`/`MATRIX_COL_PINS_RIGHT`. Currently, the size of `MATRIX_ROW_PINS` must be the same as `MATRIX_ROW_PINS_RIGHT` and likewise for the definition of columns.
+
+* `#define SELECT_SOFT_SERIAL_SPEED <speed>` (default speed is 1)
+ * Sets the protocol speed when using serial communication
+ * Speeds:
+ * 0: about 189kbps (Experimental only)
+ * 1: about 137kbps (default)
+ * 2: about 75kbps
+ * 3: about 39kbps
+ * 4: about 26kbps
+ * 5: about 20kbps
+