Last()
last(<string>[, <delim>])
Returns the last word of a string, that is, everything to the right of the last space in the string, or the entire string if there are no spaces in the string.
<delim> may be used to specify a word delimiter other than a space.
Example
> say last(This is a test)
You say, "test"
> say last(Happy-Fun-Test-Thing,-)
You say, "Thing"