Tue, 04 Apr 2017 23:21:16 +0200 allow to load this into "isabelle jedit -l HOL";
wenzelm [Tue, 04 Apr 2017 23:21:16 +0200] rev 65386
allow to load this into "isabelle jedit -l HOL";
Tue, 04 Apr 2017 23:12:08 +0200 print like syntax of Thy_Header.header;
wenzelm [Tue, 04 Apr 2017 23:12:08 +0200] rev 65385
print like syntax of Thy_Header.header;
Tue, 04 Apr 2017 22:56:28 +0200 more explicit types;
wenzelm [Tue, 04 Apr 2017 22:56:28 +0200] rev 65384
more explicit types;
Tue, 04 Apr 2017 22:53:01 +0200 proper name according to meaning;
wenzelm [Tue, 04 Apr 2017 22:53:01 +0200] rev 65383
proper name according to meaning;
Tue, 04 Apr 2017 22:16:42 +0200 more main sessions and global theories;
wenzelm [Tue, 04 Apr 2017 22:16:42 +0200] rev 65382
more main sessions and global theories;
Tue, 04 Apr 2017 22:07:34 +0200 eliminated redundant imports;
wenzelm [Tue, 04 Apr 2017 22:07:34 +0200] rev 65381
eliminated redundant imports;
Tue, 04 Apr 2017 21:57:43 +0200 eliminated Plain_HOLCF.thy (see also 8e92772bc0e8): it was modeled after HOL/Plain.thy which was discontinued later;
wenzelm [Tue, 04 Apr 2017 21:57:43 +0200] rev 65380
eliminated Plain_HOLCF.thy (see also 8e92772bc0e8): it was modeled after HOL/Plain.thy which was discontinued later;
Tue, 04 Apr 2017 21:45:54 +0200 tuned (see also 1fa1023b13b9);
wenzelm [Tue, 04 Apr 2017 21:45:54 +0200] rev 65379
tuned (see also 1fa1023b13b9);
Tue, 04 Apr 2017 21:44:44 +0200 tuned header;
wenzelm [Tue, 04 Apr 2017 21:44:44 +0200] rev 65378
tuned header;
Tue, 04 Apr 2017 21:37:26 +0200 tuned signature;
wenzelm [Tue, 04 Apr 2017 21:37:26 +0200] rev 65377
tuned signature;
Tue, 04 Apr 2017 21:33:51 +0200 proper base name;
wenzelm [Tue, 04 Apr 2017 21:33:51 +0200] rev 65376
proper base name;
Tue, 04 Apr 2017 21:11:40 +0200 tuned;
wenzelm [Tue, 04 Apr 2017 21:11:40 +0200] rev 65375
tuned;
Tue, 04 Apr 2017 21:05:07 +0200 tuned syntax;
wenzelm [Tue, 04 Apr 2017 21:05:07 +0200] rev 65374
tuned syntax; some official documentation;
Tue, 04 Apr 2017 19:51:56 +0200 clarified: allow to qualify theories from ROOT;
wenzelm [Tue, 04 Apr 2017 19:51:56 +0200] rev 65373
clarified: allow to qualify theories from ROOT;
Tue, 04 Apr 2017 19:40:47 +0200 refer to global_theories from all sessions, before selection;
wenzelm [Tue, 04 Apr 2017 19:40:47 +0200] rev 65372
refer to global_theories from all sessions, before selection;
Tue, 04 Apr 2017 18:43:58 +0200 tuned signature;
wenzelm [Tue, 04 Apr 2017 18:43:58 +0200] rev 65371
tuned signature;
Tue, 04 Apr 2017 18:43:47 +0200 tuned;
wenzelm [Tue, 04 Apr 2017 18:43:47 +0200] rev 65370
tuned;
Tue, 04 Apr 2017 17:14:41 +0200 macbroy30 is on 10.12 Sierra (already since 04-Mar-2017) -- discontinued support for 10.8 Mountain Lion;
wenzelm [Tue, 04 Apr 2017 17:14:41 +0200] rev 65369
macbroy30 is on 10.12 Sierra (already since 04-Mar-2017) -- discontinued support for 10.8 Mountain Lion;
Tue, 04 Apr 2017 16:18:53 +0200 back to more liberal imports (amending 908a27a4b9c9): tolerate mixed situations like "GCD" vs. "~~/src/HOL/GCD";
wenzelm [Tue, 04 Apr 2017 16:18:53 +0200] rev 65368
back to more liberal imports (amending 908a27a4b9c9): tolerate mixed situations like "GCD" vs. "~~/src/HOL/GCD";
Tue, 04 Apr 2017 15:05:00 +0200 tuned headers;
wenzelm [Tue, 04 Apr 2017 15:05:00 +0200] rev 65367
tuned headers;
Tue, 04 Apr 2017 11:52:28 +0200 proper imports;
wenzelm [Tue, 04 Apr 2017 11:52:28 +0200] rev 65366
proper imports; tuned headers;
Mon, 03 Apr 2017 23:31:31 +0200 tuned message;
wenzelm [Mon, 03 Apr 2017 23:31:31 +0200] rev 65365
tuned message;
Mon, 03 Apr 2017 23:12:44 +0200 merged
wenzelm [Mon, 03 Apr 2017 23:12:44 +0200] rev 65364
merged
Mon, 03 Apr 2017 23:12:16 +0200 misc tuning and modernization;
wenzelm [Mon, 03 Apr 2017 23:12:16 +0200] rev 65363
misc tuning and modernization;
Mon, 03 Apr 2017 21:17:47 +0200 clarified imports;
wenzelm [Mon, 03 Apr 2017 21:17:47 +0200] rev 65362
clarified imports;
Mon, 03 Apr 2017 17:00:36 +0200 tuned signature;
wenzelm [Mon, 03 Apr 2017 17:00:36 +0200] rev 65361
tuned signature;
Mon, 03 Apr 2017 16:50:44 +0200 tuned;
wenzelm [Mon, 03 Apr 2017 16:50:44 +0200] rev 65360
tuned;
Mon, 03 Apr 2017 16:36:45 +0200 provide session qualifier via resources;
wenzelm [Mon, 03 Apr 2017 16:36:45 +0200] rev 65359
provide session qualifier via resources;
Mon, 03 Apr 2017 14:29:44 +0200 proper qualifier (again, see df4cd6e1fdfa);
wenzelm [Mon, 03 Apr 2017 14:29:44 +0200] rev 65358
proper qualifier (again, see df4cd6e1fdfa);
Mon, 03 Apr 2017 13:39:13 +0200 simplified direct theory name (again, see also 570ba266f5b5, 2a7f9e79cb28);
wenzelm [Mon, 03 Apr 2017 13:39:13 +0200] rev 65357
simplified direct theory name (again, see also 570ba266f5b5, 2a7f9e79cb28);
Mon, 03 Apr 2017 12:49:13 +0200 tuned;
wenzelm [Mon, 03 Apr 2017 12:49:13 +0200] rev 65356
tuned;
Mon, 03 Apr 2017 12:41:06 +0200 tuned signature;
wenzelm [Mon, 03 Apr 2017 12:41:06 +0200] rev 65355
tuned signature;
Mon, 03 Apr 2017 22:18:56 +0200 removed problematic simp rule
eberlm <eberlm@in.tum.de> [Mon, 03 Apr 2017 22:18:56 +0200] rev 65354
removed problematic simp rule
Mon, 03 Apr 2017 19:41:17 +0200 merged
nipkow [Mon, 03 Apr 2017 19:41:17 +0200] rev 65353
merged
Mon, 03 Apr 2017 19:40:26 +0200 tuned
nipkow [Mon, 03 Apr 2017 19:40:26 +0200] rev 65352
tuned
Mon, 03 Apr 2017 19:32:16 +0200 Merged
eberlm <eberlm@in.tum.de> [Mon, 03 Apr 2017 19:32:16 +0200] rev 65351
Merged
Mon, 03 Apr 2017 16:56:45 +0200 added shuffle product to HOL/List
eberlm <eberlm@in.tum.de> [Mon, 03 Apr 2017 16:56:45 +0200] rev 65350
added shuffle product to HOL/List
Mon, 03 Apr 2017 18:05:17 +0200 tuned
nipkow [Mon, 03 Apr 2017 18:05:17 +0200] rev 65349
tuned
Mon, 03 Apr 2017 17:39:08 +0200 added chains of (in)equations
nipkow [Mon, 03 Apr 2017 17:39:08 +0200] rev 65348
added chains of (in)equations
Sat, 01 Apr 2017 23:48:28 +0200 misc tuning and modernization;
wenzelm [Sat, 01 Apr 2017 23:48:28 +0200] rev 65347
misc tuning and modernization;
Sat, 01 Apr 2017 22:15:59 +0200 misc tuning and modernization;
wenzelm [Sat, 01 Apr 2017 22:15:59 +0200] rev 65346
misc tuning and modernization;
Sat, 01 Apr 2017 22:03:24 +0200 clarified YXML vs. symbol encoding: operate on whole message;
wenzelm [Sat, 01 Apr 2017 22:03:24 +0200] rev 65345
clarified YXML vs. symbol encoding: operate on whole message; tuned signature;
Sat, 01 Apr 2017 19:17:15 +0200 clarified YXML vs. symbol encoding: operate on whole message;
wenzelm [Sat, 01 Apr 2017 19:17:15 +0200] rev 65344
clarified YXML vs. symbol encoding: operate on whole message;
Sat, 01 Apr 2017 19:16:19 +0200 tuned proofs;
wenzelm [Sat, 01 Apr 2017 19:16:19 +0200] rev 65343
tuned proofs;
Sat, 01 Apr 2017 18:50:26 +0200 misc tuning and modernization;
wenzelm [Sat, 01 Apr 2017 18:50:26 +0200] rev 65342
misc tuning and modernization;
Sat, 01 Apr 2017 15:35:32 +0200 tuned signature;
wenzelm [Sat, 01 Apr 2017 15:35:32 +0200] rev 65341
tuned signature;
Sat, 01 Apr 2017 08:05:40 +0200 tuned
nipkow [Sat, 01 Apr 2017 08:05:40 +0200] rev 65340
tuned
Fri, 31 Mar 2017 17:21:36 +0200 more lemmas
nipkow [Fri, 31 Mar 2017 17:21:36 +0200] rev 65339
more lemmas
Thu, 23 Mar 2017 17:20:47 +0100 tuned proof;
wenzelm [Thu, 23 Mar 2017 17:20:47 +0100] rev 65338
tuned proof;
Mon, 20 Mar 2017 21:53:37 +0100 merged
wenzelm [Mon, 20 Mar 2017 21:53:37 +0100] rev 65337
merged
Mon, 20 Mar 2017 21:44:41 +0100 misc tuning and modernization;
wenzelm [Mon, 20 Mar 2017 21:44:41 +0100] rev 65336
misc tuning and modernization;
Mon, 20 Mar 2017 20:43:26 +0100 support to encode/decode command state;
wenzelm [Mon, 20 Mar 2017 20:43:26 +0100] rev 65335
support to encode/decode command state; support to merge full contents of command state;
Mon, 20 Mar 2017 17:24:40 +0100 tuned;
wenzelm [Mon, 20 Mar 2017 17:24:40 +0100] rev 65334
tuned;
Mon, 20 Mar 2017 15:37:14 +0100 more operations;
wenzelm [Mon, 20 Mar 2017 15:37:14 +0100] rev 65333
more operations;
Mon, 20 Mar 2017 14:36:15 +0100 tuned signature;
wenzelm [Mon, 20 Mar 2017 14:36:15 +0100] rev 65332
tuned signature;
Mon, 20 Mar 2017 14:25:06 +0100 eliminated redundant check (see also 27328dcaf64c vs. 9c53198dbb1c);
wenzelm [Mon, 20 Mar 2017 14:25:06 +0100] rev 65331
eliminated redundant check (see also 27328dcaf64c vs. 9c53198dbb1c);
Mon, 20 Mar 2017 21:01:47 +0100 Corrected affiliation.
ballarin [Mon, 20 Mar 2017 21:01:47 +0100] rev 65330
Corrected affiliation.
Sun, 19 Mar 2017 20:28:21 +0100 updated to jedit-5.4.0;
wenzelm [Sun, 19 Mar 2017 20:28:21 +0100] rev 65329
updated to jedit-5.4.0;
Sun, 19 Mar 2017 18:28:32 +0100 misc tuning and modernization;
wenzelm [Sun, 19 Mar 2017 18:28:32 +0100] rev 65328
misc tuning and modernization;
Sun, 19 Mar 2017 14:50:37 +0100 clarified signature: rowid is specific to SQLite;
wenzelm [Sun, 19 Mar 2017 14:50:37 +0100] rev 65327
clarified signature: rowid is specific to SQLite;
Sun, 19 Mar 2017 14:43:54 +0100 proper primary key;
wenzelm [Sun, 19 Mar 2017 14:43:54 +0100] rev 65326
proper primary key;
Sun, 19 Mar 2017 14:43:17 +0100 more general primary_key;
wenzelm [Sun, 19 Mar 2017 14:43:17 +0100] rev 65325
more general primary_key;
Sun, 19 Mar 2017 14:06:45 +0100 tuned;
wenzelm [Sun, 19 Mar 2017 14:06:45 +0100] rev 65324
tuned;
Sun, 19 Mar 2017 13:47:07 +0100 more operations;
wenzelm [Sun, 19 Mar 2017 13:47:07 +0100] rev 65323
more operations;
Sun, 19 Mar 2017 13:36:19 +0100 tuned;
wenzelm [Sun, 19 Mar 2017 13:36:19 +0100] rev 65322
tuned;
Sun, 19 Mar 2017 13:34:47 +0100 proper SQL syntax (according of PostgreSQL);
wenzelm [Sun, 19 Mar 2017 13:34:47 +0100] rev 65321
proper SQL syntax (according of PostgreSQL);
Sun, 19 Mar 2017 13:05:06 +0100 access table via session_name: db may in principle contain multiple entries;
wenzelm [Sun, 19 Mar 2017 13:05:06 +0100] rev 65320
access table via session_name: db may in principle contain multiple entries;
Sun, 19 Mar 2017 12:57:29 +0100 more operations;
wenzelm [Sun, 19 Mar 2017 12:57:29 +0100] rev 65319
more operations;
Sun, 19 Mar 2017 11:56:56 +0100 eliminated somewhat redundant inlined name (despite a7aa17a1f721);
wenzelm [Sun, 19 Mar 2017 11:56:56 +0100] rev 65318
eliminated somewhat redundant inlined name (despite a7aa17a1f721);
Sat, 18 Mar 2017 22:11:05 +0100 more informative session result;
wenzelm [Sat, 18 Mar 2017 22:11:05 +0100] rev 65317
more informative session result;
Sat, 18 Mar 2017 21:40:47 +0100 simplified signature (despite 448325de6e4f);
wenzelm [Sat, 18 Mar 2017 21:40:47 +0100] rev 65316
simplified signature (despite 448325de6e4f);
Sat, 18 Mar 2017 21:24:54 +0100 clarified signature;
wenzelm [Sat, 18 Mar 2017 21:24:54 +0100] rev 65315
clarified signature;
Sat, 18 Mar 2017 20:57:15 +0100 tuned;
wenzelm [Sat, 18 Mar 2017 20:57:15 +0100] rev 65314
tuned;
Sat, 18 Mar 2017 20:51:42 +0100 more realistic PIDE build session;
wenzelm [Sat, 18 Mar 2017 20:51:42 +0100] rev 65313
more realistic PIDE build session;
Sat, 18 Mar 2017 20:35:58 +0100 more uniform options;
wenzelm [Sat, 18 Mar 2017 20:35:58 +0100] rev 65312
more uniform options;
Sat, 18 Mar 2017 20:30:05 +0100 asynchronous send_stop operation;
wenzelm [Sat, 18 Mar 2017 20:30:05 +0100] rev 65311
asynchronous send_stop operation;
Sat, 18 Mar 2017 20:24:12 +0100 more process arguments;
wenzelm [Sat, 18 Mar 2017 20:24:12 +0100] rev 65310
more process arguments;
Sat, 18 Mar 2017 18:57:14 +0100 proper message text (see also fa62e095d8f1);
wenzelm [Sat, 18 Mar 2017 18:57:14 +0100] rev 65309
proper message text (see also fa62e095d8f1);
Sat, 18 Mar 2017 16:43:40 +0100 support PIDE option (inactive);
wenzelm [Sat, 18 Mar 2017 16:43:40 +0100] rev 65308
support PIDE option (inactive); misc tuning;
Sat, 18 Mar 2017 16:15:37 +0100 more explicit build_session args;
wenzelm [Sat, 18 Mar 2017 16:15:37 +0100] rev 65307
more explicit build_session args; support both command-line and PIDE version;
Sat, 18 Mar 2017 14:30:03 +0100 avoid compiler warning;
wenzelm [Sat, 18 Mar 2017 14:30:03 +0100] rev 65306
avoid compiler warning;
Sat, 18 Mar 2017 14:16:13 +0100 actually throw exception;
wenzelm [Sat, 18 Mar 2017 14:16:13 +0100] rev 65305
actually throw exception;
Sat, 18 Mar 2017 14:12:38 +0100 clarified result;
wenzelm [Sat, 18 Mar 2017 14:12:38 +0100] rev 65304
clarified result;
Sat, 18 Mar 2017 13:15:07 +0100 reset print_mode, e.g. relevant for saved heap;
wenzelm [Sat, 18 Mar 2017 13:15:07 +0100] rev 65303
reset print_mode, e.g. relevant for saved heap;
Sat, 18 Mar 2017 13:06:10 +0100 clarified init (see also 32755e357a51, ac48def96b69);
wenzelm [Sat, 18 Mar 2017 13:06:10 +0100] rev 65302
clarified init (see also 32755e357a51, ac48def96b69);
Sat, 18 Mar 2017 12:46:52 +0100 restore output channels after shutdown, e.g. relevant for saved heap;
wenzelm [Sat, 18 Mar 2017 12:46:52 +0100] rev 65301
restore output channels after shutdown, e.g. relevant for saved heap;
Sat, 18 Mar 2017 12:24:56 +0100 clarified signature;
wenzelm [Sat, 18 Mar 2017 12:24:56 +0100] rev 65300
clarified signature;
Fri, 17 Mar 2017 23:24:04 +0100 merged
wenzelm [Fri, 17 Mar 2017 23:24:04 +0100] rev 65299
merged
Fri, 17 Mar 2017 22:00:34 +0100 tuned;
wenzelm [Fri, 17 Mar 2017 22:00:34 +0100] rev 65298
tuned;
Fri, 17 Mar 2017 21:57:11 +0100 proper columns;
wenzelm [Fri, 17 Mar 2017 21:57:11 +0100] rev 65297
proper columns;
Fri, 17 Mar 2017 21:55:13 +0100 tuned signature;
wenzelm [Fri, 17 Mar 2017 21:55:13 +0100] rev 65296
tuned signature;
Fri, 17 Mar 2017 21:43:37 +0100 more general signature: not limited to SQLite;
wenzelm [Fri, 17 Mar 2017 21:43:37 +0100] rev 65295
more general signature: not limited to SQLite;
Fri, 17 Mar 2017 21:18:49 +0100 suppress inlined properties from log output;
wenzelm [Fri, 17 Mar 2017 21:18:49 +0100] rev 65294
suppress inlined properties from log output;
Fri, 17 Mar 2017 20:57:20 +0100 prefer database, but also accept log.gz from historic versions;
wenzelm [Fri, 17 Mar 2017 20:57:20 +0100] rev 65293
prefer database, but also accept log.gz from historic versions;
Fri, 17 Mar 2017 20:33:27 +0100 more robust JDBC initialization, e.g. required for Isabelle/jEdit startup;
wenzelm [Fri, 17 Mar 2017 20:33:27 +0100] rev 65292
more robust JDBC initialization, e.g. required for Isabelle/jEdit startup;
Fri, 17 Mar 2017 20:21:01 +0100 maintain persistent session info in SQLite database instead of log file;
wenzelm [Fri, 17 Mar 2017 20:21:01 +0100] rev 65291
maintain persistent session info in SQLite database instead of log file;
Fri, 17 Mar 2017 19:14:11 +0100 tuned;
wenzelm [Fri, 17 Mar 2017 19:14:11 +0100] rev 65290
tuned;
Fri, 17 Mar 2017 11:35:03 +0100 tuned signature;
wenzelm [Fri, 17 Mar 2017 11:35:03 +0100] rev 65289
tuned signature;
Fri, 17 Mar 2017 11:27:58 +0100 tuned;
wenzelm [Fri, 17 Mar 2017 11:27:58 +0100] rev 65288
tuned;
Fri, 17 Mar 2017 11:15:57 +0100 tuned message;
wenzelm [Fri, 17 Mar 2017 11:15:57 +0100] rev 65287
tuned message;
Fri, 17 Mar 2017 10:58:32 +0100 clarified signature;
wenzelm [Fri, 17 Mar 2017 10:58:32 +0100] rev 65286
clarified signature;
Fri, 17 Mar 2017 10:39:14 +0100 more selective queries;
wenzelm [Fri, 17 Mar 2017 10:39:14 +0100] rev 65285
more selective queries;
Fri, 17 Mar 2017 10:03:00 +0100 clarified data representation;
wenzelm [Fri, 17 Mar 2017 10:03:00 +0100] rev 65284
clarified data representation;
Fri, 17 Mar 2017 09:49:01 +0100 data representation with XML.Cache;
wenzelm [Fri, 17 Mar 2017 09:49:01 +0100] rev 65283
data representation with XML.Cache; tuned;
Fri, 17 Mar 2017 09:33:58 +0100 clarified name;
wenzelm [Fri, 17 Mar 2017 09:33:58 +0100] rev 65282
clarified name;
Thu, 16 Mar 2017 23:33:39 +0100 SQL database operations for combined session info;
wenzelm [Thu, 16 Mar 2017 23:33:39 +0100] rev 65281
SQL database operations for combined session info;
Thu, 16 Mar 2017 23:27:29 +0100 prefer non-strict default;
wenzelm [Thu, 16 Mar 2017 23:27:29 +0100] rev 65280
prefer non-strict default;
Thu, 16 Mar 2017 23:26:16 +0100 clarified signature (again, see also 3ed43cfc8b14);
wenzelm [Thu, 16 Mar 2017 23:26:16 +0100] rev 65279
clarified signature (again, see also 3ed43cfc8b14);
Thu, 16 Mar 2017 21:22:01 +0100 tuned signature;
wenzelm [Thu, 16 Mar 2017 21:22:01 +0100] rev 65278
tuned signature;
Thu, 16 Mar 2017 21:09:13 +0100 tuned;
wenzelm [Thu, 16 Mar 2017 21:09:13 +0100] rev 65277
tuned;
Thu, 16 Mar 2017 12:00:40 +0100 tuned comments;
wenzelm [Thu, 16 Mar 2017 12:00:40 +0100] rev 65276
tuned comments;
Thu, 16 Mar 2017 11:25:09 +0100 clarified message: exception output usally happens in a context without extra newline;
wenzelm [Thu, 16 Mar 2017 11:25:09 +0100] rev 65275
clarified message: exception output usally happens in a context without extra newline;
Thu, 16 Mar 2017 16:02:18 +0000 Removed [simp] status for Complex_eq. Also tidied some proofs
paulson <lp15@cam.ac.uk> [Thu, 16 Mar 2017 16:02:18 +0000] rev 65274
Removed [simp] status for Complex_eq. Also tidied some proofs
Thu, 16 Mar 2017 13:55:29 +0000 Removal of [simp] status for greaterThan_0. Moved two theorems into main HOL.
paulson <lp15@cam.ac.uk> [Thu, 16 Mar 2017 13:55:29 +0000] rev 65273
Removal of [simp] status for greaterThan_0. Moved two theorems into main HOL.
Wed, 15 Mar 2017 21:52:04 +0100 always output proof state: there is only one output buffer in Isabelle/VSCode;
wenzelm [Wed, 15 Mar 2017 21:52:04 +0100] rev 65272
always output proof state: there is only one output buffer in Isabelle/VSCode;
Wed, 15 Mar 2017 20:39:23 +0100 updated package;
wenzelm [Wed, 15 Mar 2017 20:39:23 +0100] rev 65271
updated package;
Wed, 15 Mar 2017 19:46:19 +0100 merged
wenzelm [Wed, 15 Mar 2017 19:46:19 +0100] rev 65270
merged
Wed, 15 Mar 2017 19:39:34 +0100 unused;
wenzelm [Wed, 15 Mar 2017 19:39:34 +0100] rev 65269
unused;
Wed, 15 Mar 2017 19:33:34 +0100 misc tuning and modernization;
wenzelm [Wed, 15 Mar 2017 19:33:34 +0100] rev 65268
misc tuning and modernization;
Wed, 15 Mar 2017 17:24:48 +0100 clarified message;
wenzelm [Wed, 15 Mar 2017 17:24:48 +0100] rev 65267
clarified message;
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