--- a/doc/EFR-library-API	Sat May 11 19:48:56 2024 +0000
+++ b/doc/EFR-library-API	Sat May 11 20:29:11 2024 +0000
@@ -1,7 +1,9 @@
+Libgsmefr general usage
+=======================
+
 The external public interface to Themyscira libgsmefr consists of a single
-header file <gsm_efr.h>; it should be installed in the same system include
-directory as <gsm.h> from classic libgsm (1990s free software product) for the
-original FR codec, and the API of libgsmefr is modeled after that of libgsm.
+header file <gsm_efr.h>; it should be installed in some system include
+directory.
 
 The dialect of C we chose for libgsmefr is ANSI C (function prototypes), const
 qualifier is used where appropriate, and the interface is defined in terms of