s.size = '30'
s[0] = '"a"'
s[1] = '"b"'
s[2] = '"c"'
s[3] = '"a"'
s.size = '30'
s[-1] = '"c"'
s[-2] = '"b"'
s[-3] = '"a"'
s[-4] = '"c"'
Forwards in dump_string(ReplString("abc",10),30)
'a'
'ab'
'abc'
'abca'
'abcab'
'abcabc'
'abcabca'
'abcabcab'
'abcabcabc'
'abcabcabca'
'abcabcabcab'
'abcabcabcabc'
'abcabcabcabca'
'abcabcabcabcab'
'abcabcabcabcabc'
'abcabcabcabcabca'
'abcabcabcabcabcab'
'abcabcabcabcabcabc'
'abcabcabcabcabcabca'
'abcabcabcabcabcabcab'
'abcabcabcabcabcabcabc'
'abcabcabcabcabcabcabca'
'abcabcabcabcabcabcabcab'
'abcabcabcabcabcabcabcabc'
'abcabcabcabcabcabcabcabca'
'abcabcabcabcabcabcabcabcab'
'abcabcabcabcabcabcabcabcabc'
'abcabcabcabcabcabcabcabcabca'
'abcabcabcabcabcabcabcabcabcab'
'abcabcabcabcabcabcabcabcabcabc'
Backwards in dump_string(ReplString("abc",10),30)
'c'
'bc'
'abc'
'cabc'
'bcabc'
'abcabc'
'cabcabc'
'bcabcabc'
'abcabcabc'
'cabcabcabc'
'bcabcabcabc'
'abcabcabcabc'
'cabcabcabcabc'
'bcabcabcabcabc'
'abcabcabcabcabc'
'cabcabcabcabcabc'
'bcabcabcabcabcabc'
'abcabcabcabcabcabc'
'cabcabcabcabcabcabc'
'bcabcabcabcabcabcabc'
'abcabcabcabcabcabcabc'
'cabcabcabcabcabcabcabc'
'bcabcabcabcabcabcabcabc'
'abcabcabcabcabcabcabcabc'
'cabcabcabcabcabcabcabcabc'
'bcabcabcabcabcabcabcabcabc'
'abcabcabcabcabcabcabcabcabc'
'cabcabcabcabcabcabcabcabcabc'
'bcabcabcabcabcabcabcabcabcabc'
'abcabcabcabcabcabcabcabcabcabc'
Middle on ReplString("abc",10)
s[10] = "b"
s[11] = "c"
s[12] = "a"
s[13] = "b"
s[14] = "c"
s[15] = "a"
s[16] = "b"
s[17] = "c"
s[18] = "a"
s[19] = "b"
s[20] = "c"
Underrun on ReplString("abc",10)
s[-5] = "b"
s[-4] = "c"
s[-3] = "a"
s[-2] = "b"
s[-1] = "c"
s[0] = "a"
s[1] = "b"
s[2] = "c"
s[3] = "a"
s[4] = "b"
s[5] = "c"
Overrun on ReplString("abc",10)
s[25] = "b"
s[26] = "c"
s[27] = "a"
s[28] = "b"
s[29] = "c"
s[30] = nil
s[31] = nil
s[32] = nil
s[33] = nil
s[34] = nil
s[35] = nil