 Each element of the new array will contain a number representing the ordinal sorted position of the target array, so if AMERICA is the sixth element of array A$ but first in alphabetical order, then setting A() = AIDX(A$) would cause A(1) to contain the value 6.Writing a BASIC program is much more fun than rewriting the same program each time you use it, therefore the authors of BASIC allow programmers to SAVE their program code to a library member and to REPLACE it when changes are made.SAVE PROG1,PGMRLIB causes the current module to be saved as a subroutine member (type R) named PROG1 in a user library named PGMRLIB.