1. A method for retrieving task information using a system having task-based indexes, comprising acts of: acquiring task-based categories and documents, with each document having subparts and having task information described in the document; associating at least one task-descriptive symbol with each task-based category; indexing the documents to create an index having index words and pointers, where the index words reflect the task information in the documents and the pointers connect particular index words to particular documents or subparts of documents; correlating the task-descriptive symbols with the index words to create an alignment of words having similar meaning such that index words are matched with similar task-descriptive symbols; and forming task-based indexes by grouping the alignment of words with the respective task-based category, whereby a user may use the task-based index by inputting task descriptive symbols, resulting in retrieval of a document having task information pertaining to the task-descriptive symbols.