Please explain this commands.
 

hai every body

I am writing UDF's for my problem. Recently i found one UDF, in that they used these commands. I tried to get the explanation for that commands in user manual but failed.

Anybody can please explain the working of that commands. I feel very greatfull for this help. Thank you so much :).

commands:

CX_Cell_Id c
Surface surf=SurfaceList[id]

c=surf.points[i].cell
cell=RP_CELL(&c)
cell_thread=RP_THREAD(&c)

Google? Try to type separate commands.

hai paka

thak you for kind reply
i treid in google also but i did not get the information.

i am trying to write the UDF for time averaged Reynolds stresses in K-epsilon turdulence modelling.
any help plz

shoots.... I don't remember where, but long time ago I have found UDF reference manual somewhere on the web, where I could find most of the things explained there. Cannot find it now, though. Sorry.