Back index- I

- Instruction: I-% - Parameter: "%" (optional) value from 1 to 9 - Return: none - Description: Decreases the index by "%" positions. The index is a position variable that analyzes the characters of the line. It runs through the text in order to translate it into braille. This instruction causes the index to move backward by "%" positions. If the "%" parameter is not specified, the index will move back one position. - Examples: Text string: b Braille string: 456 Condition: I-Cpb Description: The character "b" is transcribed with the cell "456" if there is another "b" two positions further back. Text string: b Braille string: 456 Condition: I-4 Cpb Description: The character "b" is transcribed with cell "456" if there is another "b" more than five positions behind.