Hello, This is most probably basic, but i simply couldn't find the answer. I have written a function in a separate file multi.r, and would like to load this into the R-IDE so that I can use my function. How do i go about it? Thank you in advance. Saptarshi Saptarshi Guha|sapsi at pobox.com|http://blue.chem.psu.edu/~saptarshi