Hi everyone. I want to do `\makebox[width][r]{content}` with *plain*tex. Any idea on how to do it? I just checked the defs in latex.ltx file and got a bit lost with all the `@makebox` and `@imakebox`..
If you want to do `\makebox[width][l]{content}` then this is very similar to `hbox to width {content}` but I need a `r` not `l`.