diff --git a/man8/ld.so.8 b/man8/ld.so.8
index 84278d0..8350c40 100644
--- a/man8/ld.so.8
+++ b/man8/ld.so.8
@@ -143,6 +143,33 @@ ELF libraries at execution-time.
 Similar to the
 .B PATH
 environment variable.
+
+.B ld.so
+understands the strings
+.IR $ORIGIN ,
+.I $LIB
+and
+.I $PLATFORM
+(or equivalently
+.IR ${var} )
+in a LD_LIBRARY_PATH string.
+
+.B LIB
+is expanded to lib or lib64 based on the architecture. Use when
+mixed environment (32bit and 64bit) searches for same libraries names.
+
+.B ORIGIN
+is expanded to the location of the binary which is currently loaded.
+
+.B PLATFORM
+is expanded to the running platform.
+
+The following example will allow single
+.B LD_LIBRARY_PATH
+to be used by 32bit and 64bit applications that searching for 'liba.so',
+which resides at /opt/my/lib and /opt/my/lib64.
+
+export LD_LIBRARY_PATH="/opt/my/\\${LIB}:${LD_LIBRARY_PATH}"
 .TP
 .B LD_PRELOAD
 A whitespace-separated list of additional, user-specified, ELF shared