1. A computer-based method of retrieving Web document information from a computer network, comprising: retrieving a Web document from a computer network using a first protocol included in a primary document address specification; obtaining data from the Web document; determining whether the primary document address specification has a corresponding secondary document address specification; and if the primary document address specification has a corresponding secondary document address specification, retrieving supplementary data from the computer network pertaining to the Web document using a second protocol included in the secondary document address specification.
1. A computer-based method of retrieving Web document information from a computer network, comprising: retrieving a Web document from a computer network using a first protocol included in a primary document address specification; obtaining data from the Web document; determining whether the primary document address specification has a corresponding secondary document address specification; and if the primary document address specification has a corresponding secondary document address specification, retrieving supplementary data from the computer network pertaining to the Web document using a second protocol included in the secondary document address specification. 12. The method of claim 1, further comprising: determining whether the primary document address specification has a corresponding tertiary document address specification; if the primary document address specification has a corresponding tertiary document address specification, retrieving further data pertaining to the Web document by using the tertiary document specification; and if the primary document address specification has a corresponding tertiary document address specification, storing the further data pertaining to the Web document obtained using the tertiary document address specification with the data obtained from the Web document.