Index: Instructions/Instructions.conf
===================================================================
diff -u -r6cdd449310134c4c94618f17e7d749ebad0bcb54 -r4d9947bd1fb86daa748cd2e7c679123f1e549b74
--- Instructions/Instructions.conf	(.../Instructions.conf)	(revision 6cdd449310134c4c94618f17e7d749ebad0bcb54)
+++ Instructions/Instructions.conf	(.../Instructions.conf)	(revision 4d9947bd1fb86daa748cd2e7c679123f1e549b74)
@@ -1,3 +1,15 @@
+# ######################################################################################################
+# Do not use data message with chagne interval in here, it affects the intrcution update perforamnce. #
+# ######################################################################################################
+# multiple value reserved blocks can be used even in each line.
+# format is as the following (look at the Messages_List.xlsx for the id and parameters):
+# {<Message ID in Decimal>:<message parameter number>:<extra string>:<precision>}
+# extra string can be used for unit(mL) which also accetps space
+# In case extra string or precision is not being used leave it empty eg. {77:1::}
+# the foramt shall always have three ':' and message id and parameter numbe shall not be ignored.
+# otherwise will NOT be identified as a value reserved block and will be used as part of the string.
+# ######################################################################################################
+
 [Sample^Water Sample]
 Place cup in the water sampling pocket. Press and hold the "Water Sample" button. = 8_water sampling_v4.png
 
@@ -28,7 +40,7 @@
 Connect the cartridge dialysis fluid lines to the DG fluid ports. = 20_dialysate lines to DG_v4.png
 
 [Disposables^Heparin Syringe]
-Fill a syringe with heparin and connect the cartridge heparin tubing line.  = 30_fill syringe with heparin_v4.png
+Fill a syringe with {77:2:mL:2} heparin and connect the cartridge heparin tubing line. = 30_fill syringe with heparin_v4.png
 Insert heparin filled syringe into the syringe pump. = 31_load syringe-01.png
 
 [Disposables^Saline Bag]