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| NAME | PURPOSE | FORMAT | 
| INPUT$ | Returns  a  string  of characters from key- board or file. | INPUT$ (n , file  number) where: n is number of characters to be read | 
| INSTR | Returns the position of one string within an- other. | INSTR(i ,x$ ,y$)  where: i is an integer x$ is the string being searched y$ is the string sought | 
| INT | Returns   the   largest integer less than or equal to a given num- ber. | INT(x) where: x is a number | 
| IPL | Used to run a program immediately on start- up. | IPL"filename" | 
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