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Underside

version 5 by Eric Eve

Allows objects to be put under other objects. An underside usually starts out closed so that its contents are hidden from view. Requires Version 7 (or later) of Bulk Limiter; the space under objects is limited by bulk. Underside is compatible with Version 10 or later of Implicit Actions, but does not require it. Version 5 of Underside avoids features deprecated in Version 6E59 of Inform.

You can do three things here:

1. Download this extension,
2. View its documentation, or
3. View its source code.