Pointer and relations/

Hello,

I am new to the forum. I use Solidworks 2008 and have a question:in previous drawings I did (SLDDRW) while using smart dimension, Iused to move the pointer/mouse over an intersection, line,centerline, etc and I could see a dot, centerline, etc so I couldselect it to dimension. Recently, I don't see any of those things.I am not sure why and I would really appreciate any help.

Thank you,
Ghazi ToutounjiSolidworksParts And Features