Cheat Engine

[FreeER]

Well my assumption is that they're using [chome's] task manager to find the pid for a specific process (which may have many others with the same name). So they have the pid already, but it's in decimal not hex and they don't want to type it into the google to convert it to hex to match what CE shows /shrug
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https://github.com/FreeER/ has a few CE related repos