For example, these savings account can be easily converted to chequeing accounts it might only take a couple of days (there might be resrictions) but it can be converted and when it get converted, it will change the bank's reserve requirements a little bit, but it will allow .. if this person converts it.. they will have the ability to write more cheques so M2 includes M1 plus things that are very easy to convert to M1, so they will include savings accounts, money-market accounts (which I won't go into detail here, but they are really kind of similar that you get slightly higher interest but there are restrictions on your ability to access it, but it is not too hard to turn it into chequing accounts...) and things like small dollar-value time-deposit accounts.