Hi to all pic microcontroller Engineers. I have two questions for you. 1. What is the reason when I label name error Mplab doesnât like it displays symbol previously not defined. when I change it to something else works ok. How can find out what to lable.is there any specific names that shouldnât use? 2. the way I understood about cblock is it is automatic equation that compiler will find empty location and use it. let say I am using simple table code when I use cblock it doesnât work when I use manual way like xxxx equ xxx works ok. Could you tell me when should I use Cblock instraction. the way I use it cblock 0x00 test endc Andre thank you for any help.