# More Subscripts

Recall that a subscript indicator (dots 56) is used to enter a subscripted expresssion in the equation editor.

Nested subscripts occur when more than one subscript is applied to an expression. The number of subscripts required is hierarchical in nature. This means that when you press the subscript indicator once one subscript will appear. Entering another subscript indicator will cause two subscripts to appear, and so on. Unless the baseline indicator is supplied, anything entered after the subscript(s) will be maintained as part of the subscripted expression.

Note that, unlike when typing these equations out by hand, you only need to type one subscript indicator at a time. That is, even if there are three subscripts in the equation itself, you only need to enter one subscript per rise in level as opposed to three subscript indicators. If you enter all three at once, the equation editor will place the cursor on the blank cell furthest to the right and you will have to enter the numbers going backwards.

## Exercises

Type the following expressions into the equation editor below and verify that the equation editor produces the proper Nemeth braille output in each case. Also verify that a sighted friend can read each expression you have typed as it is displayed on the screen. Feel free to try your own examples, and to explore other combinations of nested exponents.

- 2 sub x, sub 3
- x sub y sub sub z
- s sub 1 sub 2 sub sub 3...
- X sub 1 sub 2 sub sub 3
- x sub 1 sub sub 2, baseline, sub 3, sub sub 4 ...