If someone could explain the many meanings that oi(, oi(/ it would help me a lot. I'm a bit confused and not sure how to translate it half the time, for example in this sentence (alpha,87):
au)ta\r e)gw\n I)qa/khnde e)leu/somai, o)/fra oi( ui(o\n
ma~llon e)potru/nw kai/ oi( me/noj e)n fresi\ qei/w,
ei)j a)gorh\n kale/santa ka/rh komo/wntaj )Axaiou\j ...