diff --git a/src/modules/officechooser/officechooser.conf b/src/modules/officechooser/officechooser.conf
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+++ b/src/modules/officechooser/officechooser.conf
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+# Configuration for the low-density software chooser
+---
+# The packagechooser writes a GlobalStorage value for the choice that
+# has been made. The key is *packagechooser_<id>*. If *id* is set here,
+# it is substituted into the key name. If it is not set, the module's
+# instance name is used; see the *instances* section of `settings.conf`.
+# If there is just one packagechooser module, and no *id* is set,
+# resulting GS key is probably *packagechooser_packagechooser*.
+#
+# The GS value is a comma-separated list of the IDs of the selected
+# packages, or an empty string if none is selected.
+#
+# id: ""
+
+# Software selection mode, to set whether the software packages
+# can be chosen singly, or multiply.
+#
+# Possible modes are "optional", "required" (for zero or one)
+# or "optionalmultiple", "requiredmultiple" (for zero-or-more
+# or one-or-more).
+mode: required