restricted system commands enabled.
**lua-node-remove.tex
(./lua-node-remove.tex
remove middle: head=glue cur=penalty b.next=penalty b.prev=glue a.next=penalty
remove head: head=penalty cur=penalty a.next=penalty c.prev=nil
remove last: head=nil cur=nil c.next=nil c.prev=nil
direct remove: penalty glue)
No pages of output.