Here are some rules I use to help me better control my blocks. The first rule is that all objects inside the block be placed onto layer 0. The next rule is to have the objects by block (for color, line weight, and linetype) rather than by layer. By using zero layer, the block will inherit the properties of the layer it resides on as long as it is by layer in all three categories. By using by block in combination with the zero layer, the block will not only inherit its parent layer, by block lets you change the color, line weight, and linetype of each block individually. This allows me to do several things with these simple blocks, including
use separate colors for blocks in separate areas for phasing
count blocks by separate colored areas, which becomes easy with the Selectsimilar command with filters set up correctly
shade back and lower line weight of existing blocks and bold out the new blocks for better contrast
Notes from Cadalyst tip reviewer R.K. McSwain: These are all good suggestions. Understanding the effect these settings have during block creation can save you time when it comes time to change the appearance of these block insertions later on. See also, tip #4107 and tip #2016.