The Problem

When I was using Worldedit to create an underground passage, I found that I couldn't quickly create slanted up and down passages because the stack command didn't have this option, and I didn't understand how the "block vector in form xyz" was used, nor was it written in the end-user documentation.

A Solution

Add a document description about the "block vector in form xyz" function and add a direction similar to "upforward" to the stack command.

Alternatives

No response

Anything Else?

It's also possible that I don't have enough knowledge about Worldedit. If there is any solution, I would appreciate it if you could let me know.

the form is "x,y,z". we're not going to add arbitrary names for every possible set of block vectors (i.e. infinite), which is why you can specify your own.