diff --git a/src/branding/default/branding.desc b/src/branding/default/branding.desc
index c2d868c82..beb236f9b 100644
--- a/src/branding/default/branding.desc
+++ b/src/branding/default/branding.desc
@@ -8,10 +8,17 @@ componentName:  default
 # same distribution.
 welcomeStyleCalamares:   false
 
-# Should the welcome image (productWelcome, below) be scaled
-# up beyond its natural size?
-welcomeExpandingLogo:   true
-
+# These are strings shown to the user in the user interface.
+# There is no provision for translating them -- since they
+# are names, the string is included as-is.
+#
+# The four Url strings are the Urls used by the buttons in
+# the welcome screen, and are not shown to the user. Clicking
+# on the "Support" button, for instance, opens the link supportUrl.
+# If a Url is empty, the corresponding button is not shown.
+#
+# bootloaderEntryName is how this installation / distro is named
+# in the boot loader (e.g. in the GRUB menu).
 strings:
     productName:         Generic GNU/Linux
     shortProductName:    Generic
@@ -25,11 +32,33 @@ strings:
     knownIssuesUrl:      http://calamares.io/about/
     releaseNotesUrl:     http://calamares.io/about/
 
+# Should the welcome image (productWelcome, below) be scaled
+# up beyond its natural size? If false, the image does not grow
+# with the window but remains the same size throughout (this
+# may have surprising effects on HiDPI monitors).
+welcomeExpandingLogo:   true
+
+# These images are loaded from the branding module directory.
+#
+# productIcon is used as the window icon, and will (usually) be used
+#       by the window manager to represent the application. This image
+#       should be square, and may be displayed by the window manager
+#       as small as 32x32 (but possibly larger).
+# productLogo is used as the logo at the top of the left-hand column
+#       which shows the steps to be taken. The image should be square,
+#       and is displayed at 80x80 pixels (also on HiDPI).
+# productWelcome is shown on the welcome page of the application in
+#       the middle of the window, below the welcome text. It can be
+#       any size and proportion, and will be scaled to fit inside
+#       the window. Use `welcomeExpandingLogo` to make it non-scaled.
+#       Recommended size is 320x150.
 images:
     productLogo:         "squid.png"
     productIcon:         "squid.png"
     productWelcome:      "languages.png"
 
+# The slideshow is displayed during execution steps (e.g. when the
+# installer is actually writing to disk and doing other slow things).
 slideshow:               "show.qml"
 
 # Colors for text and background components.