How to know the line/node/keypoint number in ANSYS

Hi,

 I need to do the modelling in a command file instead of through the ANSYS graphinc interface as I need to try out different configurations and automatically run it in ANSYS. My question is:

 Say I create a rectangular geometry using the BLC4 command:

BLC4,-5,-15,80,100

I need to load the structure using the DL command? How do I know which side of the rectangel is assigned which line number? Can I control this? Is it consistent?

 Thanks,

Prakash Manandhar

http://p-manandhar.info