remove
modify
remove
not "first" since we do not state a second necessity
clarify
redundant
avoids confusion with NeXus use of "entry"
NXcollection is a special case.  Out of place here, move further down.
Increase the emphasis on what is required and what is optional.
avoid confusion with optical element "mirror"
placement
bring object closer to "this"
raw data are not results
use consistent terminology
font
Storing scans is not difficult bonce it is carefully considered how to do it.
Just declared a "challenge" so keep consistent terminology.
number agreement
this pathology is not necessary to describe
not necessary to justify