Testing MID$ Assignment
=======================

Test 1: Replace middle characters
Original: HELLO WORLD
After MID$(A$, 7, 5) = "BASIC":
Result: HELLO BASIC

Test 2: Replace from start
Original: 12345678
After MID$(B$, 1, 3) = "ABC":
Result: ABC45678

Test 3: Replace near end
Original: ABCDEFGH
After MID$(C$, 6, 3) = "XYZ":
Result: ABCDEXYZ

Test 4: Short replacement
Original: 1234567890
After MID$(D$, 3, 5) = "AB" (2 chars):
Result: 12AB567890

Test 5: Long replacement (truncated)
Original: AAAAAAAAAA
After MID$(E$, 3, 3) = "BCDEFGH":
Result: AABCDAAAAA

Test 6: Single character
Original: TESTING
After changing pos 1 and 4:
Result: BESKING

MID$ assignment tests complete!

