I've received a reference schematic from a company whose chips I'm interested in using. After studying it for a while and copying the schematic into the CAD program I'm most familiar with, I have some questions about what some of the markings on the schematic indicate: Whatever program they're using does things differently from the ones I've used so far; netlabels and such seem as if they're being used slightly differently than I'm used to. I'm not sure my copy is a faithful copy, because of these differences.
What give-aways can you find in a schematic to figure out which program it was drawn in? Obviously, some programs add their names in the bottom-corner description box, but this one didn't. How can I deduce which program it is, so I can better figure out the mysterious parts of this reference design?