1. A method for using a computer system to provide additional material related to a concept within electronic text, comprising the steps of: a) identifying electronic text for display; b) packaging with said text computer-executable code, wherein: i. said code is formatted and designed to be executed in real-time without user action when said accompanying text is displayed; ii. when executed, said code submits a search request for additional information related to a concept represented within at least one text section of said identified text, said search request leading to a search of an index, said search of an index identifying additional material related to said concept; and iii. when executed, said code provides for display in the same presentation as said identified electronic text an indicator of said identified additional material, wherein said indicator comprises display material not derived from said electronic text; and c) in response to a request for said electronic text, providing said electronic text together with said computer-executable code; wherein said index contains a plurality of terms by which it may be searched; at least one term in said index is associated with at least one reference to a text section; and at least one term in said index is associated with a plurality of references, at least two of said plurality of references indicating different text sections.
1. A method for using a computer system to provide additional material related to a concept within electronic text, comprising the steps of: a) identifying electronic text for display; b) packaging with said text computer-executable code, wherein: i. said code is formatted and designed to be executed in real-time without user action when said accompanying text is displayed; ii. when executed, said code submits a search request for additional information related to a concept represented within at least one text section of said identified text, said search request leading to a search of an index, said search of an index identifying additional material related to said concept; and iii. when executed, said code provides for display in the same presentation as said identified electronic text an indicator of said identified additional material, wherein said indicator comprises display material not derived from said electronic text; and c) in response to a request for said electronic text, providing said electronic text together with said computer-executable code; wherein said index contains a plurality of terms by which it may be searched; at least one term in said index is associated with at least one reference to a text section; and at least one term in said index is associated with a plurality of references, at least two of said plurality of references indicating different text sections. 21. The method of claim 1 , wherein said indicator of related material comprises an excerpt of said related material.