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### 5.2 Automatic activation and deactivation

There are two ways for auto. (de)activation ECB after Emacs-start and for different window-configurations.

`ecb-auto-activate`

  This option is for auto. activating ECB after Emacs-startup. Set this to not nil and ECB will automatically be started after Emacs comes up.

`window-manager support`

  The window-manager support of ECB deactivates ECB when going to another window-configuration and reactivates ECB when coming back to the ECB-window-configuration. For all details about this see Window-managers and ECB.