Shift the Cursor by the Specified Number (indx a) (indx a)

The program cursor is shifted up or down by the number specified by 'a'. The line to be branched is specified relative to the line after this command. If a line number lower than the program's starting point is given, it will branch to the first line. If a value higher than the total number of lines is provided, the program will branch to the last line

Example: