Select Block Name and Replace All

You can redefine a block definition in AutoCAD drawing with a block(dwg file) in NetPhotoManager. After you have done that, All the block reference defined by that block definition will be replace by the new block definition.

To do this, Start AutoCAD and open the drawing file you want to operate, then switch to NetPhotoManager and right click a dwg file and select "Select Block Name and Replace All" in context menu. The "Select block to redefine in current AutoCAD drawing" dialog will appear as following figure:

Select the block you want to redefine and press "OK" button, the selected block will be redefine. Switch to AutoCAD to see results.