diff --git a/reference/misc/functions/pack.xml b/reference/misc/functions/pack.xml
index c80c292168..3710857368 100644
--- a/reference/misc/functions/pack.xml
+++ b/reference/misc/functions/pack.xml
@@ -137,10 +137,26 @@
f
float (machine dependent size and representation)
+
+ g
+ float (machine dependent size, little endian byte order)
+
+
+ G
+ float (machine dependent size, big endian byte order)
+
d
double (machine dependent size and representation)
+
+ e
+ double (machine dependent size, little endian byte order)
+
+
+ E
+ double (machine dependent size, big endian byte order)
+
x
NUL byte
@@ -193,6 +209,12 @@
+
+ 7.0.15,7.1.1
+
+ The "e", "E", "g" and "G" codes were added to enable byte order support for float and double.
+
+
5.6.3