1. Apparatus comprising: a processor; storage holding media content including core media content having, within and not outside the core media, plural cross-reference identifiers referencing other media content not included in the core media content; a media content presenter preconfigured to present, in a form allowing direct perception by a human, core media content selected for presentation; a media content cross-reference scanner configured to scan the core media content selected for presentation to gather, from the core media content selected for presentation and without reference outside the core media, the plural cross-reference identifiers referencing other media content not included in the core media content selected for presentation; a media content cross-reference presentation generator configured to generate, using the plural gathered cross-reference identifiers, a newly generated set of presentation fields that present the plural gathered cross-reference identifiers; and a presentation controller preconfigured to cause the media content presenter to concurrently present, in a form allowing direct perception by a human, both the core media content including the plural cross-reference identifiers and, supplemental to the concurrently presented same cross-reference identifiers in the core media, the newly generated set of presentation fields, presenting the cross-reference identifiers, not already included in the presented core media content.