In the early days of home computers, there was a lot of talk in advertisements about the amount of memory a computer had. That is still the case but the terms RAM (Random-Access Memory) and ROM (Read-Only Memory) are not as prominent as they once were. While computers are great tools, there are still things that paper can do much better. It occurs to me that paper can be described as a Random-Input Medium (RIM). When I write on paper - especially when making notes - I write in different directions all over the page. The text is sometimes small, sometimes large; depending on the importance of what is written. Asterisks, dots, dashes and underlining is common; again, denoting relative importance. Ticks, crosses and text struck-through with a light single, heavy double or wavy line also appear.
So, after the high tech RAM and ROM, there is the decidedly low tech RIM. Of course, let's not forget REM, which was used in the computer programming language BASIC to denote a non-executed REMark statement and RUM, which is a drink.