diff --git a/src/escpos.rs b/src/escpos.rs
index 7d42616..93fc910 100644
--- a/src/escpos.rs
+++ b/src/escpos.rs
@@ -63,7 +63,6 @@ pub enum TextEffect {
     Bold,
     DoubleHeight,
     DoubleWidth,
-    // InvertColor,
     Justify(JustifyOrientation),
 }
 
diff --git a/structure.md b/structure.md
new file mode 100644
index 0000000..6388947
--- /dev/null
+++ b/structure.md
@@ -0,0 +1,35 @@
+## Structs
+### EscPosBuilder
+Fields:
+- content: Vec
+- max_width: u16
+### Document
+Fields:
+- children: Vec
+### Heading
+Fields:
+- value: String
+### Text
+Fields:
+- style: Option
+- value: String
+### Img
+Fields:
+- src: String
+- orientation: Option
+### Qr
+Fields:
+- size: Option
+- ecc: Option
+- value: String
+### Barcode
+Fields:
+- height: Option
+- mod_width: Option
+- text_position: Option
+- bar_type: Option
+- value: String
+### Feed
+Fields:
+- amount: Option
+