V s = ‘abcdefgh’
V n = 2
V m = 3
V char = ‘d’
V chars = ‘cd’
print(s[n - 1 .+ m])          // starting from n=2 characters in and m=3 in length
print(s[n - 1 ..])            // starting from n characters in, up to the end of the string
print(s[0 .< (len)-1])        // whole string minus last character
print(s[s.index(char) .+ m])  // starting from a known character char="d" within the string and of m length
print(s[s.index(chars) .+ m]) // starting from a known substring chars="cd" within the string and of m length