changed explanations for "optional" and "inScope" of "introduction.ad…

…oc-file"

guides/profiles/p012/introduction.adoc

@@ -11,7 +11,7 @@ image::../../../shared/images/BII_relationship.png[align="center", width=600]
 The {name-profile} describes electronic messaging support for the business process of sending a response to the qualification of an economic operator by a contracting authority. In case the qualification request ist rejected, sending a rejection resopnse is obligatory, otherwise sendig a positive response to the qualification ist optional and could be replaced by directly sending out the invitation to tender. Good communication practice shall request a positive response to those qualification requests that are not directly followed by an invitation to tender. The qualification response is intended for use by businesses and purchasing authorities in procedures where access to participation is restricted to qualified economic operators. The key aspects covered by this BIS are:
 
     * Pre-condition: An economic operator has submitted its qualification documents to a contracting authority as specified in the Call for Tender documents using PEPPOL BIS {P011}. The contracting authority evaluates the qualification information and needs to report its decision, positive or negative, to the economic operator.
-    * Optional: In the case of a positive qualification response the contracting authority can continue with the tendering process without sending a positive qualification response before. Usually the positive qualification response is expressed by the invitation to submit a tender (not in scope of this BIS) covered by PEPPOL BIS {P013}.
+    * Optional: In the case of a positive qualification response the contracting authority may continue with the tendering process without sending a positive qualification response before. Usually the positive qualification response is expressed by the invitation to submit a tender (not in scope of this BIS) covered by PEPPOL BIS {P013}.
     * In scope: PEPPOL BIS {P012} is essential to inform any economic operators who have been rejected in the qualification. This PEPPOL BIS {P012} provides capabilities to inform an economic operator that his qualification has been rejected and that the economic operator is excluded from the procedure by the contracting authority.
 
 In an open procedure this profile is *not* used but the qualification is sent together with the tender, an economic operator submits. In open procedures evaluation results are communicated in PEPPOL BIS {P009}.