org-use-property-inheritance is a variable defined in org.el.
Value
nil
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Documentation
Non-nil means properties apply also for sublevels.
This setting is chiefly used during property searches. Turning it on can
cause significant overhead when doing a search, which is why it is not
on by default.
When nil, only the properties directly given in the current entry count.
When t, every property is inherited. The value may also be a list of
properties that should have inheritance, or a regular expression matching
properties that should be inherited.