Came across an obsolete information in Worg recently:In https://orgmode.org/worg/org-faq.html "5.13. What does a minimal Emacs init file look like?"
there is the line (global-set-key "\C-cb" 'org-iswitchb) proposed.However, I found out that org-iswitchb has been removed from org-mode. Its replacement is org-switchb.
