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src/kemal/common_exception_handler.cr

@@ -1,4 +1,5 @@
 module Kemal
+  # Kemal::CommonExceptionHandler handles all the exceptions including 404, custom errors and 500.
   class CommonExceptionHandler < HTTP::Handler
     INSTANCE = new
 

src/kemal/config.cr

@@ -1,4 +1,9 @@
 module Kemal
+  # Kemal::Config stores all the configuration options for a Kemal application.
+  # It's a singleton and you can access it like.
+  #
+  #   Kemal.config
+  #
   class Config
     INSTANCE       = Config.new
     HANDLERS       = [] of HTTP::Handler

src/kemal/context.cr

@@ -1,8 +1,10 @@
-# Context is the environment which holds request/response specific
-# information such as params, content_type e.g
+# HTTP::Server::Context is the class which holds HTTP::Request and HTTP::Server::Response alongside with
+# information such as request params, request/response content_type, session e.g
+#
+# Instances of this class are passed to an `HTTP::Server` handler.
 class HTTP::Server
   class Context
-    alias StoreTypes =  Nil | String | Int32 | Float64 | Bool
+    alias StoreTypes = Nil | String | Int32 | Float64 | Bool
     getter store = {} of String => StoreTypes
 
     def params

src/kemal/exceptions.cr

@@ -1,3 +1,4 @@
+# Exceptions for 404 and custom errors are defined here.
 module Kemal::Exceptions
   class RouteNotFound < Exception
     def initialize(context)