Index: doc/howto.txt
==================================================================
--- doc/howto.txt
+++ doc/howto.txt
@@ -104,9 +104,12 @@
 (s:form 'action "login.login" 'method "post"
    (s:input-preserve 'type "text" 'name "email-address" 'size "16" 'maxlength "30")
    (s:input 'type "submit"   'name "form-name" 'value "login"))
 
 (s:get-input 'email-address)
+
+To preserve the input simply do a set of the value on the 'name field:
+(s:set! "email-address" "matt@kiatoa.com")
 
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 10.