53. Our language-game (48) has various possibilities; there is a variety of
cases in which we should say that a sign in the game was the name of a square of
such-and-such a colour. We should say so if, for instance, we knew that the
people who used the language were taught the use of the signs in such-and-such a
way. Or if it were set down in writing, say in the form of a table, that this
element corresponded to this sign, and if the table were used in teaching the
language and were appealed to in certain disputed cases.
We can also imagine such a table's being a tool in the use of the language. Describing a complex is then done like this: the person who describes the complex has a table with him and looks up each element of the complex in it and passes from this to the sign (and the one who is given the description may also use a table to translate it into a picture of coloured squares). This table might be said to take over here the role of memory and association in other cases. (We do not usually carry out the order "Bring me a red flower" by looking up the colour red in a table of colours and then bringing a flower of the colour that we find in the table; but when it is a question of choosing or mixing a particular shade of red, we do sometimes make use of a sample or table.)
If we call such a table the expression of a rule of the language-game, it can be said that what we call a rule of a language-game may have very different roles in the game.