The new version of Analytics Designer Developer Handbook is available: version 12.1, link

It includes the following updates:

New Input control API to get active selected members

New Performance best practice: Use Application.refreshData() to refresh multiple data sources

New Performance best practice: Pause each widget individually when you want to pause a group of widgets

New Keeping last saved values of dynamic variables in bookmark

New Planning: Publish and leave dialog and option to turn off the dialog

Updated Analytic application script performance popup

Hope you find them useful.