diff --git a/wic/rockchip.wks b/wic/rockchip.wks
index 1cc30ae..fac0b8f 100644
--- a/wic/rockchip.wks
+++ b/wic/rockchip.wks
@@ -2,15 +2,17 @@
 # Copyright (C) 2021 Trevor Woerner
 # Released under the MIT license (see COPYING.MIT for the terms)
 #
+# short-description: Create a disk image suitable for booting Rockchip from SD-card
+# long-description: Creates a disk image partitioned using GPT, suitable for Rockchip
 # Disk layout
 # Note that the reference documentation refers to 512 byte disk sectors, but
-# wic uses 1KB blocks
+# wic uses 1KB blocks. The following table uses 512 byte sectors:
 #
 #   Partition   Start Sector    Number of Sectors
-#   loader1     64              8000
+#   loader1     64              8000        (idbloader / U-Boot SPL)
 #   reserved1   8064            128
 #   reserved2   8192            8192
-#   loader2     16384           8192
+#   loader2     16384           8192        (U-Boot proper)
 #   atf         24576           8192
 #   boot        32768           229376
 #   root        262144          -           (suggested)