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manual_experiments: clarifications

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Araq 2019-05-15 17:39:37 +02:00
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doc/manual_experimental.rst
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@ -17,13 +17,16 @@ Some of these are not covered by the ``.experimental`` pragma or
one may want to use Nim libraries using these features without using them
oneself.
**Note**: Unless otherwise indicated, these features are not to be removed,
but refined and overhauled.
Package level objects
=====================
Every Nim module resides in a (nimble) package. An object type can be attached
to the package it resides in. If that is done, the type can be referenced from
other modules as an `incomplete`:idx: object type. This features allows to
other modules as an `incomplete`:idx: object type. This feature allows to
break up recursive type dependencies accross module boundaries. Incomplete
object types are always passed ``byref`` and can only be used in pointer like
contexts (``var/ref/ptr IncompleteObject``) in general since the compiler does