This Tag field is not only used for Articles.
The string used is a global string: JGLOBAL_SELECT_SOME_OPTIONS.
It is used as placeholder in formbehavior.php (ROOT/libraries/cms/html/formbehavior.php) when the field is marked as multiple in the chosen method.
We "could" override the string in our various core components ini files after making sure that we have no other fields marked as multiple. But not sure this is the right solution.

In com_modules you have the same situation for module positions and we use the message
Type or select a position

I am going to create a PR for this to be
Type or select a tag

that's not saying what are the options, I think it is more: Type and press enter for a new tag or type and select an existing

I know it is long but that would be a correct description

Correction I dont see how to easily make that change - maybe someone else can

@rdeutz how is the message for module positions any different to that needed for tags? Am I mising something

The behaviour is the same, the difference is that a tag or positions will be created. Is the same lang-tag used?

The code for selecting tags and the code for selecting modules is
completely different from what I could tell although the behaviour is the
same - hence my suggested language string

On 19 January 2015 at 12:56, Robert Deutz notifications@github.com wrote:

The behaviour is the same, the difference is that a tag or positions will
be created. Is the same lang-tag used?

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Reply to this email directly or view it on GitHub
#5570 (comment).

Brian Teeman
Co-founder Joomla! and OpenSourceMatters Inc.
http://brian.teeman.net/

Closing as we have a PR here: #8041