diff --git a/src/core/args.c b/src/core/args.c
index 3b7108a5..9359b7b5 100644
--- a/src/core/args.c
+++ b/src/core/args.c
@@ -1,7 +1,7 @@
 /*
- args.c : irssi
+ args.c : small frontend to libPopt command line argument parser
 
-    Copyright (C) 1999-2000 Timo Sirainen
+    Copyright (C) 1999-2001 Timo Sirainen
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
diff --git a/src/core/line-split.c b/src/core/line-split.c
index 2810a0d5..b7daf275 100644
--- a/src/core/line-split.c
+++ b/src/core/line-split.c
@@ -19,6 +19,7 @@
 */
 
 #include "module.h"
+#include "misc.h"
 
 /* Maximum line length - split to two lines if it's longer than this.
 
@@ -38,14 +39,6 @@ struct _LINEBUF_REC {
         char *str;
 };
 
-static inline int nearest_power(int num)
-{
-	int n = 1;
-
-	while (n < num) n <<= 1;
-	return n;
-}
-
 static void linebuf_append(LINEBUF_REC *rec, const char *data, int len)
 {
 	if (rec->len+len > rec->alloc) {
diff --git a/src/core/misc.h b/src/core/misc.h
index 80cf87be..45c8ce11 100644
--- a/src/core/misc.h
+++ b/src/core/misc.h
@@ -8,7 +8,18 @@
 typedef void* (*FOREACH_FIND_FUNC) (void *item, void *data);
 typedef int (*COLUMN_LEN_FUNC)(void *data);
 
+static inline int nearest_power(int num)
+{
+	int n = 1;
+
+	while (n < num) n <<= 1;
+	return n;
+}
+
+/* Returns 1 if tv1 > tv2, -1 if tv2 > tv1 or 0 if they're equal. */
 int g_timeval_cmp(const GTimeVal *tv1, const GTimeVal *tv2);
+/* Returns "tv1 - tv2", returns the result in milliseconds. Note that
+   if the difference is too large, the result might be invalid. */
 long get_timeval_diff(const GTimeVal *tv1, const GTimeVal *tv2);
 
 /* find `item' from a space separated `list' */