Grammatically Correct UsageEdit
The symbol is today used to dontate the word 'and' within the name of an official establishment (such as Baltimore & Ohio Railroad Co.), or to replace 'and' during 'speech within speech' (such as "It was terrible, and my mum said 'it is so sad & upsetting'; she has a point"). When it was a letter, it was at first correct to use it as the sound 'and' or 'ann' (but not as the word 'an'); the word sand was written as s& (but with a non-acending '&').
It is sometimes used as a substitute for the word 'and' in circumstances that are not grammatically correct, or simply as a blind substitute. It is important in URL Code as a substitute to the '?' if a URL ends in a '?' already, and it is used to show an action command.