Function startsWith( whole, start )

Description:
Determines whether a string starts with a certain substring.
Parameters:
whole (String)
the string to test
start (String)
the sequence that may appear at the start of whole
Return Value (boolean):
true if the first few characters of whole are the same as start
Example:
startsWith("CYGNUS X-1", "CYG") = true
Signature:
boolean startsWith(String, String)