I would like [document type] converted into an electronic document and later need to change [symbols, fractions or superscripts/subscripts in expressions] in [software]. I can provide a non-sensitive sample I am authorised to use. Will each part be delivered as an equation object, ordinary text or an image? Can you demonstrate changing one symbol? Which parts can only be retained as images, and would later changes require replacing the whole image or another service? Please state the delivery form and cost for each part.
