diff --git a/Blueprint-Specification-v1.md b/Blueprint-Specification-v1.md
index d37731b..a8b3bd4 100644
--- a/Blueprint-Specification-v1.md
+++ b/Blueprint-Specification-v1.md
@@ -8,14 +8,20 @@ The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "S
 
 This specification defines a format that describes a region (made up of blocks and entities) of a [Minecraft](https://minecraft.net) world for the purpose of serialization and storage to disk or to JSON-based database. It is designed in order to allow maximum cross-compatibility between platforms, versions, and various states of modification.
 
+The goal of the BentoBox Blueprint format is to grant us the ability to serialize regions of a Minecraft world to disk or to any user-chosen storage method to be later placed back in the world, while avoiding to rely on third-party softwares or plugins to provide us the serialization and deserialization capabilities.
+
 ## Revision history
 
 | Version | Date | BentoBox version | Description
 |---|---|---|---|
-| 1 | 2019-06-09 | [1.5.0](https://github.com/BentoBoxWorld/BentoBox/releases/tag/1.5.0) | Initial version
+| 1 | 2019-06-09 | [1.5.0](https://github.com/BentoBoxWorld/BentoBox/releases/tag/1.5.0) | Initial version, derivative of the BentoBox Schem format
 
 ## Definitions
 
+### <a name="defMaterial"></a>Material
+
+A [Material](https://hub.spigotmc.org/javadocs/spigot/org/bukkit/Material.html) is an ID provided by the [Bukkit API](https://dev.bukkit.org/) that defines the literal type of a block or an item. It affects various rendering options client-side such as light, transparency or display. They represent a programmatical shortcut to the actual corresponding NamespacedKey.
+
 ## Specifications
 
 ### Format
@@ -34,8 +40,8 @@ All field names in the specification are **case sensitive**.
 
 | Field name | Type | Description |
 |---|---|---|
-| name | `String` | Name of the Blueprint |
-| icon | `String` | |
+| name | `String` | Display name of the Blueprint |
+| icon | `String` | [Material](#defMaterial) of the item representing the Blueprint in game as an icon |
 | attached | `Array` | |
 | entities | `Array` | |
 | blocks | `Array` | |