Wrapping long spec strings

[curio77]

Spec strings easily get long or even very long. Intuitively, one would use newlines in the string to get it to wrap in help output (since there's no other way to get the package to do that AFAIK). However, these aren't supported — is there a particular reason or would it be easy to change to allow for that, facilitating the consumption of help output by the user in such cases?