Direct dating codes
If a man is interested in a French woman, he will typically ask her out on a date.
There is a high chance that she will refuse,but this is a common dating behaviour to check to see if the man is serious about the date or not.
Similarly, advertisers promoting paid packages should ensure that any who made savings claims on their dating site but had never actually sold any of the packages at the advertised price.
A representative sample of each lot of weapons is tested with a proofing cartridge, which has vastly higher pressure than the normal specifications.
If the weapon survives a certain number of these, it passes, and all weapons in the lot get the proof mark to certify they meet the government's minimum expectations of function and safety.
Though the US government has inspection processes for military goods, there is no proof house of any sort for domestic US gun makers.
Yes, that means there are essentially no standards. The model S photo to the left shows the typical location and appearance of proofmarks on Star pistols.