for those who want to know, it's possible to autoload some mods:
>first you need to head on over to Users/[your username]/Documents/My Games/GZDoom, there you can find the ini
open it and navigate down to the Autoload section
>navigate down to the Autoload Section, we'll focus on Global Autoload.
>type in Path= and then the path to your chosen Wad, including the correct extension, Example: Path=C:\doom\wads\ and the chosen wad, either M 12 4k (creamed edition).pk3 or m12-hdoom-techdemo11.pk3, or what ever you named them
>hit save and close down whatever program you're using to open the ini
>you are now free to open up doom with HDoom autoloading
remember: load order maters, if you want specific weapons or monsters to show up, load then AFTER the intended mod.
if you don't want to do that, you can always use
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, use whatever your preference is, don't worry, it supports GZDoom and other source ports