clarified Position.Identified: do not require range from prover, default to command position;

maintain Command_Range position as in ML;

more compact representation of special string values;

separate Java FX modules -- no need to include jfxrt.jar by default;

tuned signature;

tuned signature;

separate module Command_Span: mostly syntactic representation; potentially prover-specific Output_Syntax.parse_spans;

tuned signature;

clarified Command_Span in accordance to Scala (see also c2c1e5944536);

tuned output, in accordance to transaction name in ML;

more explicit type Span in Scala, according to ML version;

clarified modules;

clarified signature: entity serial number is not position id;

avoid needless (and wrong w.r.t. sorts) generation of type variables; tuned whitespaces;

improved unfolding of 'let's

tuned whitespace

less aggressive unfolding; removed debugging;

document property 'set_cases'

generate 'set_cases' theorem for (co)datatypes

document property 'set_intros'

generate 'set_intros' theorem for (co)datatypes

use Goal.prove_sorry instead of Goal.prove where possible (= no schematics in goal and tactic is expected to succeed)

reduced warnings;

some localization;

support aliases within the facts space;

support for named collections of theorems in canonical order;

insist in proper 'document_files';

tuned -- avoid confusion with @{assert} for system failures (exception Fail);