document updated.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@7920 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/open-uri.rb

@@ -362,8 +362,10 @@ module OpenURI
     # field for HTTP.
     # I.e. it is ignored for FTP without HTTP proxy.
     #
-    # The hash may include other option which key is a symbol:
+    # The hash may include other options which key is a symbol:
     #
+    # [:proxy]
+    #  Synopsis:
     #    :proxy => "http://proxy.foo.com:8000/"
     #    :proxy => URI.parse("http://proxy.foo.com:8000/")
     #    :proxy => true
@@ -374,11 +376,13 @@ module OpenURI
     #  boolean or nil.
     #  When String or URI is given, it is treated as proxy URI.
     #  When true is given or the option itself is not specified,
-    #    environment variable `scheme_proxy'(or `SCHEME_PROXY') is examined.
+    #  environment variable `scheme_proxy' is examined.
     #  `scheme' is replaced by `http' or `ftp'.
     #  When false or nil is given, the environment variables are ignored and
     #  connection will be made to a server directly.
     #
+    # [:content_length_proc]
+    #  Synopsis:
     #    :content_length_proc => lambda {|content_length| ... }
     # 
     #  If :content_length_proc option is specified, the option value procedure
@@ -392,6 +396,8 @@ module OpenURI
     #  nil.
     #  It is happen when HTTP response has no Content-Length header.
     #
+    # [:progress_proc]
+    #  Synopsis:
     #    :progress_proc => lambda {|size| ...}
     #
     #  If :progress_proc option is specified, the proc is called with one