[latexrefman] versions of some of these commands

[Vincent Belaïche]

Hello Jim,
I am trying to catch up…
I am wondering what does exaclty this sentence means (1st paragraph of
node Spaces) : versions of some of these commands are in this
chapter. What is the word « version » for ? Does it mean that these
same commands have alternative not documented use ? Why not just write
« This chapter documents some of these commands. » ?

 V.