Page history
16 October 2018
9 October 2018
Add glue
m+34
Pros and cons of disconnecting the bell wire
+571
Get the table headings in the right order.
m+36
Be clearer on microfilters. Add table for pin allocation
+708
Effects of eliminating the tinkling
+740
Eliminating the tinkling
+306
Introduce the bell wire
+940
Add description
m+312
UK wiring
+1,895
Initial draft
+752