By Bob Arnold Ask outgoing Co-Lin President Dr. Jane Hulon Sims why she is retiring from her job at the college now, what the high and low points have been in her work and what is her vision for the future of the local institution, and she keeps coming back to one word: growth. From the college’s welcoming sign on Highway 51 to upgrading its athletic facilities to taking on regional economic development as a mission, she says it is all about investing in Co-Lin’s growth. Because the college is