Computer software for aiding individuals in providing instruction in and using bilingual augmentative communication and in teaching English as a Second Language (ESL); Natural language coding systems comprising keyboards, touchscreen keyboards, computers, electronic display screens for computers, computer programs and instructional program guides, synthetic speech output devices, and instruction manuals for use by people with physical and cognitive communication disabilities for generating synthetic speech messages, all sold as a unit; bilingual language encoding apparatus, namely, keyboards, touchscreen keyboards, computers, electronic display screens for computers, computer programs and instructional program guides, synthetic speech output devices, and instruction manuals for enhancing rate of text generation, all sold as a unit; bilingual language learning systems comprising keyboards, touchscreen keyboards, computers, electronic display screens for computers, computer programs and instructional program guides, synthetic speech output devices, and instruction manuals, all sold as a unit for use by people with physical and cognitive communication disabilities for generating synthetic speech messages; data retrieval apparatus, namely, keyboards, keyboard overlays, computers, electronic display screens for computers, computer programs and instructional program guides, synthetic speech output devices, and instruction manuals all sold as a unit