An increment card is a card that holds a variable, similar to the formula card, but it can be used to evaluate and display the result of expressions involving any number of operands. Increment cards are denoted with \\\\ and are highlighted red. In this case this may work for:

• Forces, in which sometimes it may use two or more force component, denoted with $F_1$ or $F_n$.
• Data points, which uses either $n_1$ or $n_a$, with $a$ as an incrementing integer.