Data exchange between a widget and a clock face

All properties/functions of a widget are globally available as WIDGETS.widgetname.property, for example my widget has function setClockError which is available as WIDGETS.adjust.setClockError(x).

The reason is that certain processes should not be interrupted when the user presses the button to go to the setting screen.

All widgets are stopped and restarted when user goes to settings screen, just like when user changes to any other app. (Settings is just one of the apps.)