While working on MDL-74159 I've seen that currently, only help_ajax is using the 'helplinkpopup' class, to open in a new window content.
Although it's not used in core (at least I haven't been able to find it), we should check if that's still is required/used by third-party plugins and then deprecate it properly if it's not used.
- has been marked as being related by
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MDL-74159 Docs links which open in a new window should have an icon to indicate this
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- Closed
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