Junctions created by Opus are different from to those made by mklink

The properties of a junction made by DOpus are different from junctions made by mklink.
this is from the output of cmd.exe command "dir":

2020-01-20  11:56 AM    <JUNCTION>     link1 [\??\F:\temp\target1]
2020-01-20  11:57 AM    <JUNCTION>     link2 [F:\temp\target2]

link1 was made by DOpus, and link2 by mklink.
Why are there question marks in the junctions made by DOpus? Does it matter?

It doesn't matter. The \??\ prefix can mean longer path names are supported, as well as things like spaces and dots at the end of names.

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