A spreadplayers utility that is made to spread players into caves and structures
This is a pack to place a player in a structure, like a cave. In the overworld this will generally place you under a tree, or error out after too many attempts, but in the nether or a cave world, this can effectively be a spreadplayers command.
This is effectively obsolete with the new spreaplayers functionality, but there are a few niche use cases where this may be relevant.
To run use the function cavespread:spread
This will only place a player on "valid" blocks, these are under the tag #cavespread:valid you can add or remove blocks as you see fit.
To get debug info just do add the tag csdebug to yourself