diff --git a/docs/spec/04.00.00.conventions.md b/docs/spec/04.00.00.conventions.md
index 8179c58..b184650 100644
--- a/docs/spec/04.00.00.conventions.md
+++ b/docs/spec/04.00.00.conventions.md
@@ -52,11 +52,14 @@ section is the header. The second section contains the metadata. This section is
 
 ### Draco Conventions
 
-* When bit reading is finished it will always pad the read to the current
-byte.
+* f[n]
+  * Unsigned n-bit number appearing directly in the bitstream. The bits are read from high to low order.
+  * When bit reading is finished it will always pad the read to the current byte.
 
 * I16, UI16, I32, UI32, I64, UI64, and Float values must be little endian.
 
+* Float is IEEE 754 Single precision.
+
 * varUI32 and varUI64 types must be decoded by the LEB128() function.
 
 * varUI32 can represent values in the range 0 to 2^32 - 1.