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+<!-- -*- mode: markdown; coding: utf-8; -*- -->
+
+COUNTED-FEATURE-TESTS - Numeric prefix for standard CL #+ and #- reader
+macros.
+
+Copyright (C) 2012 Olof-Joachim Frahm
+
+Released as Public Domain.  Uses two definitions from SBCL:
+
+    ;;;; This software is part of the SBCL system. See the README file for
+    ;;;; more information.
+    ;;;;
+    ;;;; This software is derived from the CMU CL system, which was
+    ;;;; written at Carnegie Mellon University and released into the
+    ;;;; public domain. The software is in the public domain and is
+    ;;;; provided with absolutely no warranty. See the COPYING and CREDITS
+    ;;;; files for more information.
+
+Uses fiveam for defining tests.
+
+# USAGE
+
+Uses same semantics as CLSQLs reader macros:  Use
+`ENABLE-COUNTED-FEATURE-TESTS-SYNTAX` to enable and `DISABLE-` to
+disable the syntax.  `LOCALLY-ENABLE-` / `LOCALLY-DISABLE-` to switch
+until `RESTORE-COUNTED-FEATURE-TESTS-SYNTAX` is called.
+`FILE-ENABLE-COUNTED-FEATURE-TESTS-SYNTAX` to enable it just for a
+single file.
+
+The syntax enables a numeric prefix to the `#+` and `#-` (sharp-sign
+plus and minus) reader macros (positive of course), so that those skip
+that exact number of next forms.  This helps e.g. during ASDF
+definitions, feature-dependent keyword arguments and so on.
+
+# EXAMPLES
+
+    ;; (list #2+(or)
+    ;;       :a-keyword-argument and-its-value
+    ;;       'other 'stuff)
+    ;; => (OTHER STUFF)
+
+    ;; #0+is 'useless
+    ;; => USELESS
+
+    ;; #+(and) 42
+    ;; OR #1+(and) 42
+    ;; => 42