Firstly, I am having trouble woth the line properties in Inventor 2012.
i have manually made some of the lines in my drawing grey (as they are background info on what i am actually showing).
but some of the lines keep displaying black everytime i re-open the file.
Secondly, i also manually turn off some of the hidden detail in some views as only some of it is relevant. everytime i re-open the drawing some of the "turned off" hiddend detail lines reappear and have to be made invisible again.