This is the official manual for the latest Org-mode release. Org Mode Manual 1 Introduction 2 Document Structure 3 Tables 4 Hyperlinks 5 TODO Items 6 Tags 7 Properties and Columns 8 Dates and Times 9 Capture-Refile-Archive 10 Agenda Views 11 Markup 12 Exporting 13 Publishing 14 Source Code 15 Miscellaneous A Hacking B MobileOrg C History and Thanks Main Index Key Index Variable Index Previous: Faces for TODO keywords , Up: TODO extensions The structure of Org files (hierarchy and lists) makes it easy to define TODO dependencies. Usually, a parent TODO task should not be marked DONE until all subtasks (defined as children tasks) are marked as DONE. And sometimes there is a logical sequence to a number of (sub)tasks, so that one task cannot be acted upon before all siblings above it are done. If you customize the option org-enforce-todo-dependencies...