( (basestring = "The five boxing wizards jump quickly")
& (n = 10)
& (m = 5)

  { starting from n characters in and of m length: }
& @(!basestring:? [(!n+-1) ?substring [(!n+!m+-1) ?)
& out$!substring

  { starting from n characters in, up to the end of the string: }
& @(!basestring:? [(!n+-1) ?substring)
& out$!substring

  { whole string minus last character: }
& @(!basestring:?substring [-2 ?)
& out$!substring

  { starting from a known character within the string and of m length: }
& (char = "w")
& @(!basestring:? ([?p !char ?: ?substring [(!p+!m) ?))
& out$!substring

  { starting from a known substring within the string and of m length: }
& (find = "iz")
& @(!basestring:? ([?p !find ?: ?substring [(!p+!m) ?))
& out$!substring
&
)