MID$

Copy a substring out of a string. * Syntax ```sbsyntax MID$ string$, startIndex% {, length% } OUT substring$ ``` |* Input | Description | | `string$` | The string to copy from. | | `startIndex%` | The index in `string$` to start copying from. | | `length%` | The number of characters to copy (optional.)\ If omitted, copy characters up to the end of `string$`. | |* Output | Description | | `substring$` | The substring copied from `string$`. | * Examples ```sb4 'copy the word "brown" PRINT MID$("The quick brown fox",10,5) ``` ```sb4 'copy the alphabet starting at N PRINT MID$("ABCDEFGHIJKLMNOPQRSTUVWXYZ",13) ```