13. A system for searching among multiple documents and searching for subsections within individual documents using a single search interface on an input-constrained user device having a screen and a keypad, the system comprising: computer memory store comprising instructions in computer readable form that when executed cause a computer system to: display, in a first portion of the screen, a user interface text input component operable to receive search query input entered using the keypad; receive search query input entered into the text input component by a user of the device; receive, responsive to the received query input, a set of document index section indicators, wherein each document index section indicator uniquely identifies a specific point within an associated document and is associated with a subsection within said associated document, wherein the subsection associated with the specific point matches at least a portion of the query input, and wherein the set of document index section indicators includes a first document index section indicator associated with a first document and a second document index section indicator associated with a second document, the first document and the second document being different documents; receive, responsive to the received query input, a set of document pointers, where each pointer uniquely identifies a document; display, in a second portion of the screen, said document index section indicators and document pointers; receive browse actions from the user to browse through and to select one of said document index section indicators and document pointers; display, if a document index section indicator is selected, the identified document, beginning at the identified point within said document so that the user is presented with the subsection within said document that is relatively more relevant to the query input without having to first scan through one or more other subsections within said document that are relatively less relevant to the query input, or displaying, if a document pointer is selected, the beginning of the identified document; set, responsive to the document selection, a query context that includes at least one document context associated with the selected document, wherein the document context represents an attribute of the selected document; subsequent to displaying the selected document, receive subsequent search query input entered into the text input component by the user of the device; and display, responsive to the subsequent search query input and the set query context, a set of document index section indicators for the selected document in the second portion of the screen.
13. A system for searching among multiple documents and searching for subsections within individual documents using a single search interface on an input-constrained user device having a screen and a keypad, the system comprising: computer memory store comprising instructions in computer readable form that when executed cause a computer system to: display, in a first portion of the screen, a user interface text input component operable to receive search query input entered using the keypad; receive search query input entered into the text input component by a user of the device; receive, responsive to the received query input, a set of document index section indicators, wherein each document index section indicator uniquely identifies a specific point within an associated document and is associated with a subsection within said associated document, wherein the subsection associated with the specific point matches at least a portion of the query input, and wherein the set of document index section indicators includes a first document index section indicator associated with a first document and a second document index section indicator associated with a second document, the first document and the second document being different documents; receive, responsive to the received query input, a set of document pointers, where each pointer uniquely identifies a document; display, in a second portion of the screen, said document index section indicators and document pointers; receive browse actions from the user to browse through and to select one of said document index section indicators and document pointers; display, if a document index section indicator is selected, the identified document, beginning at the identified point within said document so that the user is presented with the subsection within said document that is relatively more relevant to the query input without having to first scan through one or more other subsections within said document that are relatively less relevant to the query input, or displaying, if a document pointer is selected, the beginning of the identified document; set, responsive to the document selection, a query context that includes at least one document context associated with the selected document, wherein the document context represents an attribute of the selected document; subsequent to displaying the selected document, receive subsequent search query input entered into the text input component by the user of the device; and display, responsive to the subsequent search query input and the set query context, a set of document index section indicators for the selected document in the second portion of the screen. 17. The system according to claim 13 , the computer memory store further comprising instructions that cause the computer system to display indicators adjacent to the displayed document pointers, in order to distinguish the displayed document pointers from the displayed document index section indicators.