diff --git a/calamares/modules/unpackfs.conf b/calamares/modules/unpackfs.conf
index 46bf267..d12110b 100644
--- a/calamares/modules/unpackfs.conf
+++ b/calamares/modules/unpackfs.conf
@@ -1,8 +1,100 @@
+# SPDX-FileCopyrightText: no
+# SPDX-License-Identifier: CC0-1.0
+#
+# Unsquash / unpack a filesystem. Multiple sources are supported, and
+# they may be squashed or plain filesystems.
+#
+# Configuration:
+#
+#   from globalstorage: rootMountPoint
+#   from job.configuration: the path to where to mount the source image(s)
+#       for copying an ordered list of unpack mappings for image file <->
+#       target dir relative to rootMountPoint.
+
 ---
+# Each list item is unpacked, in order, to the target system.
+#
+# Each list item has the following **mandatory** attributes:
+#   - *source* path relative to the live / intstalling system to the image
+#   - *sourcefs* the type of the source files; valid entries are
+#       - `ext4` (copies the filesystem contents)
+#       - `squashfs` (unsquashes)
+#       - `file` (copies a file or directory)
+#       - (may be others if mount supports it)
+#   - *destination* path relative to rootMountPoint (so in the target
+#       system) where this filesystem is unpacked. It may be an
+#       empty string, which effectively is / (the root) of the target
+#       system.
+#
+# Each list item **optionally** can include the following attributes:
+#   - *exclude* is a list of values that is expanded into --exclude
+#       arguments for rsync (each entry in exclude gets its own --exclude).
+#   - *excludeFile* is a single file that is passed to rsync as an
+#       --exclude-file argument. This should be a full pathname
+#       inside the **host** filesystem.
+#   - *weight* is useful when the entries take wildly different
+#       times to unpack (e.g. with a squashfs, and one single file)
+#       and the total weight of this module should be distributed
+#       differently between the entries. (This is only relevant when
+#       there is more than one entry; by default all the entries
+#       have the same weight, 1)
+#
+# EXAMPLES
+#
+# Usually you list a filesystem image to unpack; you can use
+# squashfs or an ext4 image. An empty destination is equivalent to "/",
+# the root of the target system. The destination directory must exist
+# in the target system.
+#
+#   -   source: "/path/to/filesystem.sqfs"
+#       sourcefs: "squashfs"
+#       destination: ""
+#
+# Multiple entries are unpacked in-order; if there is more than one
+# item then only the first must exist beforehand -- it's ok to
+# create directories with one unsquash and then to use those
+# directories as a target from a second unsquash.
+#
+#   -   source: "/path/to/another/filesystem.img"
+#       sourcefs: "ext4"
+#       destination: ""
+#   -   source: "/path/to/another/filesystem2.img"
+#       sourcefs: "ext4"
+#       destination: "/usr/lib/extra"
+#
+# You can list filesystem source paths relative to the Calamares run
+# directory, if you use -d (this is only useful for testing, though).
+#
+#    -   source: ./example.sqfs
+#        sourcefs: squashfs
+#        destination: ""
+#
+# You can list individual files (copied one-by-one), or directories
+# (the files inside this directory are copied directly to the destination,
+# so no "dummycpp/" subdirectory is created in this example).
+# Do note that the target directory must exist already (e.g. from
+# extracting some other filesystem).
+#
+#    -   source: ../CHANGES
+#        sourcefs: file
+#        destination: "/tmp/derp"
+#    -   source: ../src/modules/dummycpp
+#        sourcefs: file
+#        destination: "/tmp/derp"
+#
+# The *destination* and *source* are handed off to rsync, so the semantics
+# of trailing slashes apply. In order to *rename* a file as it is
+# copied, specify one single file (e.g. CHANGES) and a full pathname
+# for its destination name, as in the example below.
+
 unpack:
-    - source: "/run/miso/bootmnt/manjaro/x86_64/rootfs.sfs"
-      sourcefs: "squashfs"
-      destination: ""
-    - source: "/run/miso/bootmnt/manjaro/x86_64/desktopfs.sfs"
-      sourcefs: "squashfs"
-      destination: ""
+    -   source: ../CHANGES
+        sourcefs: file
+        destination: "/tmp/changes.txt"
+        weight: 1  # Single file
+    -   source: src/qml/calamares/slideshow
+        sourcefs: file
+        destination: "/tmp/slideshow/"
+        exclude: [ "*.qmlc", "qmldir" ]
+        weight: 5  # Lots of files
+        # excludeFile: /etc/calamares/modules/unpackfs/exclude-list.txt