with SPWeb entries, it means that the content type is derived by another content type is the SPWeb targetted by the relative URL.
List Column Manager Brief description of the module This module is intended for site collection administrators who can decide to customize the columns of the list. The goal is to set columns to read-only/write mode, to decide to show/hide them on the display/edit/new forms, to get the CAML code of each associated view, to see the list of the event handlers associated to the list.
Usage of the module -
Activate the site collection feature :
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After that, you'll find a new link in the list settings of any document library/list types :
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By cliking on it, you'll be redirected to the following page :
where you can get various information about the columns such as their guid, their visibility, their type etc‌