clarified focus after dismiss;

tuned signature;

avoid repeated window popup when the mouse is moved over the same content (again, see also cb677987b7e3 and 0a1db0d02628);

more robust delayed invocation;

clarified tooltip timing of pending event and active state;

less intrusive border, notably on windows;

tighten tooltip size;

visually explicit focus (behaviour dependent on platform and look-and-feel);

tuned;

more uniform notion of disabled proofs -- NB: historic meaning of 1 for recording theorems is already included in 0;

discontinued system option "proofs" -- global state of Proofterm.proofs is persistently compiled into HOL-Proofs image; discontinued unused proofterms for FOL;

backout dedd7952a62c: static "proofs" value within theory prevents later inferencing with different configuration;

just one alternative proof syntax, which also works for Proof_Syntax.pretty_proof/Proof_Syntax.read_proof roundtrip;

CONTRIBUTORS

avoid potential race condition of focusLost/dismiss vs. popup.show;

more direct use of screen location: avoid misplacement if parent component has already disappeared asynchronously;

explicit Pretty_Tooltip.dismiss_all due to slightly changed focus mechanics;

update text only once;

tuned signature;

more aggresive ESCAPE handling, while retaining its regular meaning for jEdit;

manage popup windows via PopupFactory, which prefers light-weight JComponent, but might fall back on JWindow (despite JPanel of 0f88591478e6); more explicit tooltip hierarchy: manage exactly the visible stack -- caching is part of PopupFactory; auxiliary geometry measurement via single hidden window; tuned signature;

tuned signature;

yet another warning

sort out code equations headed by a projection of a abstract datatype