The plugin instance
The source file path for the citation, used for resolving cross-file references
The hover parent element for attaching popovers, can be null if not in hover context
splitted equation tags to render, e.g. ["1", "2", "3"] for 3 equations with tag 1, 2, 3; or ["1^1.1", "1^3.2"] for cross-file citation
if it's true, show footnote without ctrl key
Shared rendering function for both modes input splitted equation tags, render combined equation citation by settings