diff --git a/README.md b/README.md
index 2bc344c..f4ccffb 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ Supported features
 ------------------
 * If ... [Else If] ... [Else] ... End
 * Begin ... End
+* Loop ... End
+* Break [If], Continue [If]
 * ( ... )
 * ||
 * &&
@@ -19,17 +21,21 @@ Not supported
 * pipes (|)
 * subshells (`...`, ``...``)
 * text-editing commands (search forward/backward, regular expressions, et cetera)
+* For In loops
 
 Builtin Commands
 ----------------
+* AboutBox
 * Directory
 * Echo
+* Exists
 * Export
 * Parameters
 * Quote
 * Set
 * Unexport
 * Unset
+* Version
 * Which
 
 
diff --git a/builtins.h b/builtins.h
index e56c16b..c7ce68f 100644
--- a/builtins.h
+++ b/builtins.h
@@ -8,19 +8,18 @@ class Environment;
 class fdmask;
 class token;
 
+int builtin_aboutbox(Environment &e, const std::vector<std::string> &, const fdmask &);
 int builtin_directory(Environment &e, const std::vector<std::string> &, const fdmask &);
 int builtin_echo(Environment &e, const std::vector<std::string> &, const fdmask &);
+int builtin_exists(Environment &e, const std::vector<std::string> &, const fdmask &);
+int builtin_export(Environment &e, const std::vector<std::string> &, const fdmask &);
 int builtin_parameters(Environment &e, const std::vector<std::string> &, const fdmask &);
 int builtin_quote(Environment &e, const std::vector<std::string> &tokens, const fdmask &);
 int builtin_set(Environment &e, const std::vector<std::string> &, const fdmask &);
-int builtin_unset(Environment &e, const std::vector<std::string> &, const fdmask &);
-int builtin_export(Environment &e, const std::vector<std::string> &, const fdmask &);
 int builtin_unexport(Environment &e, const std::vector<std::string> &, const fdmask &);
-int builtin_which(Environment &e, const std::vector<std::string> &, const fdmask &);
-int builtin_aboutbox(Environment &e, const std::vector<std::string> &, const fdmask &);
+int builtin_unset(Environment &e, const std::vector<std::string> &, const fdmask &);
 int builtin_version(Environment &e, const std::vector<std::string> &, const fdmask &);
-
-int builtin_exists(Environment &e, const std::vector<std::string> &, const fdmask &);
+int builtin_which(Environment &e, const std::vector<std::string> &, const fdmask &);
 
 int builtin_evaluate(Environment &e, std::vector<token> &&, const fdmask &);