error.h: Clarify difference between para_errlist[] and DEFINE_PARA_ERRLIST.

diff --git a/error.h b/error.h
index c06d316d75c19b306ce509d04f43866fbf392b7a..8f4f9bb134027956fbd438cd102be3fe5d1bea7e 100644 (file)
--- a/error.h
+++ b/error.h
@@ -254,8 +254,9 @@
 enum para_error_codes {PARA_ERRORS};
 #undef PARA_ERROR
 #define PARA_ERROR(err, msg) msg
-/** Array of error strings. */
+/** All .c files need the declararation of the array of error strings. */
 extern const char * const para_errlist[];
+/** Exactly one .c file per executable must define the array. */
 #define DEFINE_PARA_ERRLIST const char * const para_errlist[] = {PARA_ERRORS}
 
 /**