[NIAC2020] reserved prefixes for names

[FreddieAkeroyd]

Discuss reserved prefixes for class, field and attributes

See nexusformat/definitions#769 and nexusformat/definitions#770

Proposed for discussion by @mkoennecke

[benajamin]

Proposal is to reserve name prefixes for specific use.

• thumbs up to accept
• thumbs down to reject
• any other emoji to abstain

[benajamin]

Proposal is to reserve the following prefixes:

prefix	use	meaning	URL
IDF_	attributes	reserved for use by ISIS Muon Facility	www.isis.stfc.ac.uk
NX	NXDL class	For the class names used with NeXus groups	www.nexusformat.org
NX_	attributes	reserved for use by NeXus	www.nexusformat.org
PDBX_	attributes	reserved for the US protein data bank	www.rcsb.org
SAS_	attributes	reserved for use by canSAS	www.cansas.org/
SILX_	attributes	reserved for use by silx	www.silx.org
NDAttr	attributes	reserved for use by EPICS area detector	https://github.com/areaDetector

Prefixes should follow a naming scheme of uppercase letters followed by an underscore, but exceptions will be made for cases already in wide use.

• thumbs up to accept
• thumbs down to reject
• any other emoji to abstain

[benajamin]

Proposal is to allow the set of reserved prefixes to be managed by email voting:

• thumbs up to accept
• thumbs down to reject
• any other emoji to abstain

The only management delegated to the technical committee is to add to the list. For discussion or to remove items from the list, the NIAC should be consulted before any changes are made.

[prjemian]

The only management delegated to the technical committee is to add to the list.

[benajamin]

Proposal to reserve name prefixes is accepted with 14 votes in favour and 1 against.
Proposal to accept set of prefixes (see above) is accepted with 15 votes in favour and 1 against.
Proposal to allow the technical committee to add new prefixes is accepted with 14 votes in favour and 1 against.
Implemented via nexusformat/definitions#808

Note that a further prefix was proposed and accepted in #80