Variable: org-hide-drawer-startup
org-hide-drawer-startup is an alias and customizable for
org-cycle-hide-drawer-startup, defined in org-cycle.el.gz.
Value
t
Documentation
Non-nil means entering Org mode will fold all drawers.
This can also be set in on a per-file basis with
#+STARTUP: hidedrawers
#+STARTUP: nohidedrawers