Type - italics, bold and quotes
Roman text is easier to read on screen than italicised text, so is only used for names of species (Salmo salar) and names of publications (Planet Earth). Bold type can be confused with hyperlinks so use it sparingly as pages that include lots of bold type are harder to scan.
Use single quotes (‘’) to denote a term or expression that would seem unusual to the reader in the context. Use single quotes (‘’) to distinguish a quote within a quote. Use double quotes (“”) for quoted speech.