Hidden

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Hidden headmates are undiscovered, with the rest of their system being unaware of their existence. The may lurk within unknown sections of the headspace.

A hidden headspace may be referred to as a nether corner, and may house hidden members.

Related Terms
Finding hidden members may be part of system mapping. For some systems, it may be hard to distinguish whether a member newly formed or was simply hidden before.

Introtivium may push a system to look for hidden members, for example via a scout or seeker.

Certain members may be purposely hidden after discovery, for example by a gatekeeper or eraser, especially if their existence is considered to be spoilers to the rest of the system. Before syscovery, all members may be considered hidden from one another, or from certain members.

Hidden members may be floaters, not belonging to any known sidesystem, or may be part of an undiscovered sidesystem.

A hidden member that is an astraymate as well may be unaware of the rest of the system in turn.

A wisptive is a type of hidden member that may be known to a core or host and assists other system members without revealing themselves.

A backspace may be an example of a nether corner.

Astergenic sisasystems may be an example of hidden sisasystems.