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<!-- This Source Code Form is subject to the terms of the Mozilla Public
- License, v. 2.0. If a copy of the MPL was not distributed with this
<!ENTITY window.title "Customize Headers">
<!ENTITY addButton.label "Add">
<!ENTITY addButton.accesskey "A">
<!ENTITY removeButton.label "Remove">
<!ENTITY removeButton.accesskey "R">
<!ENTITY newMsgHeader.label "New message header:">
<!ENTITY newMsgHeader.accesskey "N">