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@@ -29,17 +29,36 @@ You have on the release page the binary of the editor already compile and ready
 
 Here is a list of none exhaustive builtins functions.
 
+## Add-prefix
+### Syntax
+
+```lisp
+(add-prefix "prefix-name")```
+
+### Description
+The `add-prefix` function create a new prefix that can be used for `map-keys`. The default prefix is "no-prefix" and should be used for normal uses in map-keys.
+
+## editor-set-prefix
+### Syntax
+
+```lisp
+(editor-set-prefix "prefix-name")
+```
+
+### Description
+The `add-prefix` function changes the current prefix state to the new one.
+
 ## Map-key
 
 ### Syntax
 
 ``` lisp
-(map-key "key-binds" command)
+(map-key "key-binds" command "prefix")
 ```
 
 ### Description
 
-The `map-key` function allows you to link lisp function (or builtins CLispFunction) to key sequences.
+The `map-key` function allows you to link lisp function (or builtins CLispFunction) to key sequences with a certain prefix.
 
 ## Define