X-Git-Url: http://git.freeside.biz/gitweb/?a=blobdiff_plain;f=CreditCard.pm;h=b940f908b330f9638dcc20fd03f9a33487f7375a;hb=6f0ebd80c234fc7c31259ecf69731b0c34ba770e;hp=0006378f95b1259b8324552bc506eeedd320cbf4;hpb=b37ef197c19ef066c2dd3b910d220da26c048f71;p=Business-CreditCard.git

diff --git a/CreditCard.pm b/CreditCard.pm
index 0006378..b940f90 100644
--- a/CreditCard.pm
+++ b/CreditCard.pm
@@ -42,8 +42,24 @@ The validate() subroutine returns 1 if the card number provided passes
 the checksum test, and 0 otherwise.
 
 The cardtype() subroutine returns a string containing the type of
-card: "MasterCard", "VISA", and so on.  My list is not complete;
-I welcome additions.
+card.  My list is not complete; I welcome additions.
+
+Possible return values are:
+
+  VISA card
+  MasterCard
+  Discover card
+  American Express card
+  Diner's Club/Carte Blanche
+  enRoute
+  JCB
+  BankCard
+  Switch
+  Solo
+  Unknown
+
+"Not a credit card" is returned on obviously invalid
+data values.
 
 The generate_last_digit() subroutine computes and returns the last
 digit of the card given the preceding digits.  With a 16-digit card,
@@ -126,7 +142,7 @@ sub cardtype {
 # BankCards have exactly 16 digits.
 #
 # from "Becker, Max" <Max.Becker@firstgate.com>
-# It's mostly used in the UK and is either alled "Switch" or "Solo".
+# It's mostly used in the UK and is either called "Switch" or "Solo".
 # Card Type                         Prefix                           Length
 # Switch                            various                          16,18,19
 # Solo                              63, 6767                         16,18,19