0001741: [web-interface] web interface could help with client configuration file (Bart Polot)

0005800: [webpage] spellcheck gnunet.org 0005798: [webpage] handbook links are 404 0005711: [cadet service] replace enum GNUNET_CADET_ChannelOption with GNUNET_MQ_PriorityPreferences (Christian Grothoff) 0005751: [webpage] videos not findable/accessible (xrs) 0005795: [namestore service] zonemaster cannot access namestore in multi-user setup (Christian Grothoff) 0005802: [rest service] REST service should have some advanced CORS logic (schanzen) 0005675: [GNS] gnunet-gns-proxy-setup-ca: support GnuTLS for CA (schanzen) 0005428: [other] some (but not all) uses of strncpy should be removed / replaced by strlcpy (lurchi) 0005794: [gnunet-setup] multi user setup not working properly (lurchi) 0005599: [other] change old.gnunet.org URLs which point to documentation to the new docs.gnunet.org anchors (xrs) 0004623: [util library] UX: getopt should complain if -v is used with other parameters (xrs) 0005770: [namestore service] Add cache to get_nick_record in gnunet-service-namestore (Christian Grothoff) 0005753: [webpage] The red bullet points are swimming (schanzen) 0005771: [util library] gnunet-config should provide option --supported-backends (Christian Grothoff) 0005516: [documentation] Add existing images to the documentation (Christian Grothoff) 0005743: [identity service] gnunet-gns can be slow (Christian Grothoff) 0005628: [documentation] PlanetLab documentation: remove pipe to sudo of a domain which is now parked (Christian Grothoff) 0005517: [documentation] man changes (ng0) 0005755: [core service] CORE: fails to validate checksum on macOS (schanzen) 0005620: [other] can't start gnunet-arm -s (Christian Grothoff) 0005630: [webpage] html docs on docs.gnunet.org are not being updated (ng0)

0005645: [DNS service] Issuing request to a local DNS service breaks node 0005712: [peerstore] add logic to preload peerstore with information 0005555: [ARM service] arm: test_gnunet_service_arm fails on netbsd 0004164: [DHT service] Sign record_route 0005507: [integration tests] test_transport_api_manipulation_cfg fails 0003896: [transport service] GNUnet HELLOs break privacy, especially on IPv6 0005583: [other] Extract reclaim into separate repo (schanzen) 0003309: [core service] Core needs to indicate a peer's willingness to accept traffic for other peers. 0003795: [NSE service] NSE should change proof-of-work hash algorithm. 0005482: [testbed service] Some CADET tests failed 0005710: [transport service] TNG meta issue (Christian Grothoff)       0005552: [UDP transport] congestion control for UDP (Christian Grothoff)       0005530: [TCP transport] add replay protection to TCP communicator       0005548: [transport service] communicator rekey test plan       0005549: [transport service] bidirectional communicator test       0005550: [transport service] backchannel support       0005547: [transport service] communicator basic test plan       0005529: [TCP transport] TCP communicator does not support connection reversal yet       0005528: [TCP transport] TCP *communicator* bindto option should support DNS names 0005633: [build process] investigate and fix wrong install location of libexec (ng0) 0005456: [transport service] Peers don't gossip about transport addresses they don't support (Christian Grothoff) 0005614: [other] remove usage of which(1) in our code (ng0) 0005398: [util library] redundant hash in EdDSA signature process (Christian Grothoff) 0005551: [UDP transport] UDP communicator needs to handle addresses discovered from broadcast (Christian Grothoff)

0005773: [documentation] Small typo in online documentation (Christian Grothoff) 0005662: [build system] Compile Error (Karlson2k) 0005661: [libmicrohttpd external select] Request is never finished when using suspend/resume combined with external select and pthreads (Christian Grothoff) 0005691: [documentation] Share the Continuous integration of MHD (Christian Grothoff)

0005657: [documentation] Example showing how to use suspend/resume feature combined by threads and external select 0005501: [documentation] Tutorial should cover WebSocket using HTTP Upgrade API 0004998: [HTTPS (SSL)] LibreSSL support (silvioprog)

0005362: [taler-wallet-lib] Detection of wallet not working (Florian Dold) 0004513: [deployment and operations] save screenshot and browser logs for failing selenium test (ng0) 0005763: [twister] Twister should have a Web site (Marcello Stanisci) 0005752: [wallet (WebExtensions)] "nothing" happens when clicking on "add auditor" (Florian Dold) 0005566: [exchange] test_exchange_api_twisted fails (Marcello Stanisci) 0005512: [wallet (WebExtensions)] Wallet adds only 2000000 KUDOS and get stuck (Florian Dold) 0005373: [wallet (WebExtensions)] wallet does not properly implement same origin restrictions for resource based payments (Florian Dold) 0005418: [wallet (WebExtensions)] test.taler.net withdraw _ test kudos errors (Florian Dold) 0005434: [wallet (WebExtensions)] the exchange's /wire response should not include salt for accounts (Florian Dold) 0005430: [wallet (WebExtensions)] wallet popup sometimes empty with current firefox (Florian Dold) 0005322: [wallet (WebExtensions)] properly retry refunds in the wallet's backend (Florian Dold) 0005409: [codeless payments] Payto URI (Marcello Stanisci) 0005061: [wallet (WebExtensions)] fix some style/display issues in the wallet (Florian Dold) 0005036: [wallet (WebExtensions)] create an implementation for IndexedDB to be used outside of the browser (Florian Dold) 0005059: [wallet (WebExtensions)] handle cases where an exchange's key changes, but the base URL stays the same (Florian Dold) 0004108: [wallet (WebExtensions)] better, unified error reporting (Florian Dold) 0004853: [taler-wallet-lib] improve developer experience for error messages (Florian Dold) 0004738: [wallet (WebExtensions)] wallet should indicate errors in the UI when withdraw fails (Florian Dold) 0005595: [Web site(s)] Move to bootstrap 4 (ng0) 0005785: [auditor] auditor crashes when "taler-auditor-dbinit -r" wasn't run (Christian Grothoff) 0005781: [exchange] signature on wire response file fails to verify (Christian Grothoff) 0005748: [wallet (WebExtensions)] wallet has problems with multiple denominations (Florian Dold) 0005323: [wallet (WebExtensions)] support for payto://-URIs (Florian Dold) 0005424: [Web site(s)] Set up consistent policy for building Websites. (Marcello Stanisci) 0005744: [twister] TWISTER_PATH_LENGTH / TWISTER_VALUE_LENGTH should not exist, and is currently not properly enforced either (Marcello Stanisci) 0005696: [exchange] Some denoms don't get signed by the auditor. (Marcello Stanisci) 0005756: [exchange] "parse_payto()" defined in THREE places! (Christian Grothoff) 0005737: [twister] twister should support chaos setting (Marcello Stanisci) 0005647: [mechant backend] Database unusable, PROBABLY after failing transaction. (Christian Grothoff) 0005754: [exchange] libtalerexchange /keys misshandling (Christian Grothoff) 0005747: [exchange] shorter expiration times for demo and test (Christian Grothoff) 0005724: [twister] code repetition and conflicting parameters. (Marcello Stanisci) 0005469: [deployment and operations] deploy taler-auditor-httpd (Marcello Stanisci) 0005719: [mechant backend] error handling branch insufficiently tested in merchant backend (Marcello Stanisci) 0005715: [bank (demonstrator)] stop using validictory (Marcello Stanisci) 0004700: [other] Taler components should use tracing identifiers to correlate log statements from one request (Florian Dold) 0005739: [mechant backend] merchant leaves transaction uncommitted (Marcello Stanisci) 0005731: [exchange] exchange potentially leaks DB handles (Christian Grothoff) 0005709: [other] configure.ac should use AS_IF instead of shell if-statements (Christian Grothoff) 0005716: [exchange] exchange fails with cryptic error message if DB role is not a superuser (Christian Grothoff) 0005063: [auditor] "add auditor" button on auditor.test.taler.net looks ugly (Marcello Stanisci) 0005699: [auditor] locale-update make recipe fails (Marcello Stanisci) 0005687: [documentation] Update onboarding docs to reflect latest setups. (Marcello Stanisci) 0005693: [Web site(s)] Improve setup documentation for landing page repo (Christian Grothoff) 0005694: [auditor] Add README to auditor repo (Christian Grothoff) 0005672: [exchange] Should "TALER_TESTING_cmd_check_keys()" relax the check on the number of denom keys? (Marcello Stanisci) 0005490: [deployment and operations] Install Buildbot on GV.TALER.NET. (Marcello Stanisci) 0005567: [other] lcov-builder fails, nobody was told? (Marcello Stanisci) 0005483: [other] git.taler.net unreachable (ng0) 0005671: [bank (demonstrator)] Tests seek ~/.config/taler.conf (Marcello Stanisci) 0005688: [mechant backend] unable to build merchant due to includes (or getaddrinfo(3)?) (Christian Grothoff) 0005666: [bank (demonstrator)] bank and wire plugin should support date-based transaction histories (Marcello Stanisci) 0005021: [bank (demonstrator)] python logic should be documented in doxygen-compatible style (Marcello Stanisci) 0005435: [exchange] curl handle initialization should be de-duplicated (Florian Dold) 0005257: [documentation] Add payments generator chapter into merchant manual (Marcello Stanisci) 0005536: [exchange] exchange should delete private keys after signing period expires (Christian Grothoff) 0004809: [other] pages that need JavaScript to function should have a noscript block (Marcello Stanisci) 0005593: [bank (demonstrator)] Need 404 page. (Marcello Stanisci) 0005067: [documentation] docs.taler.net/index.html should receive i18n and nicer styling (Marcello Stanisci) 0005601: [documentation] Some text blocks don't get translated by pybabel. (Marcello Stanisci) 0005591: [other] Survey site stuck when surveying with JavaScript disabled. (Marcello Stanisci) 0005565: [exchange] exchange cherry picking test fails (again), 8/10 keys returned (Christian Grothoff) 0005558: [wire plugins] Change "serial id" type to a more abstract one. (Marcello Stanisci) 0005561: [bank (demonstrator)] Return 400 (bad json) if wrong currency is specified. (Marcello Stanisci) 0005538: [wallet (browser-based)] Broken page at "view product" in transaction history (Marcello Stanisci) 0005542: [bank (demonstrator)] bank assertion failure reported on twitter (Marcello Stanisci) 0004453: [other] python components should respect loglevel (Marcello Stanisci) 0005543: [bank (demonstrator)] redirect loop on https://bank.demo.taler.net/profile (Marcello Stanisci) 0005508: [mechant backend] You did not pay for this article (nice try!) (Marcello Stanisci) 0005546: [bank (demonstrator)] "INVALID AMOUNT, PLEASE REPORT" error message now in every account (Marcello Stanisci) 0004692: [deployment and operations] probing scripts to test wire config of exchange/bank is missing (Marcello Stanisci) 0005339: [bank (demonstrator)] Python components have to read the @INLINE@ keyword from configs. (Marcello Stanisci) 0005316: [deployment and operations] cgit crashes constantly, causing more interesting coredumps to be deleted eventually (Christian Grothoff) 0005376: [other] fix minor things in payto URI scheme and submit for review (Florian Dold) 0005497: [Web site(s)] Demo page error caused by wrong pattern (Marcello Stanisci) 0005413: [bank (demonstrator)] put integer overflow in transfer (Marcello Stanisci) 0005462: [exchange] reserve closing needs more testing (Marcello Stanisci) 0005451: [twister] Enable IPv6 (Marcello Stanisci) 0004952: [mechant backend] /track/transfer testcase. (Marcello Stanisci) 0005066: [merchant backend API (C)] /history API for merchant differs from /history for bank, and it is worse (Marcello Stanisci) 0005284: [mechant backend] Take curl context out of arguments from test instructions. (Marcello Stanisci) 0005338: [twister] Machine state not changed to "upload started". (Marcello Stanisci) 0005136: [exchange API (C)] exchange API should implement and export functions to persist /keys data (Marcello Stanisci) 0005447: [auditor] auditor should accept samples of deposit confirmations from merchants (Marcello Stanisci) 0005503: [mechant backend] {'code': 2501, 'hint': 'db error: could not check for existing order'} (Christian Grothoff) 0005486: [bank (demonstrator)] Make sure bank works without the 'referer' header being ebabled. (Marcello Stanisci) 0005499: [bank (demonstrator)] Unhandled non-existent money recipient exception. (Marcello Stanisci) 0004799: [documentation] Merchant's /track/* (Marcello Stanisci) 0005484: [auditor] Database crash - foreign key "violation". (Christian Grothoff) 0005506: [exchange API (HTTP specification)] Should "last_issue_date" screen signkeys as well? (Christian Grothoff) 0005226: [other] add Q+A about international payments to FAQ (Christian Grothoff) 0005449: [twister] Make it compression-aware. (Marcello Stanisci) 0005459: [exchange] Change the way CMD structs are defined. (Marcello Stanisci) 0005058: [deployment and operations] taler-deployment-restart gives weird warnings without context (Marcello Stanisci) 0005196: [deployment and operations] Authentication method for Buildbot Web interface (Marcello Stanisci) 0005412: [bank (demonstrator)] Negative Balance (Marcello Stanisci) 0005448: [auditor] auditor should provide list of audited exchanges (Christian Grothoff) 0005446: [exchange] auditor should count number of coins seen, not just their value (Christian Grothoff) 0005455: [exchange] test-exchange-api-new fails with Trait coin-private-key/4 not found. (Christian Grothoff) 0005436: [exchange] implement curl connection pooling to enable keepalive (Christian Grothoff) 0005337: [twister] Machine state not changed to "download started" (Christian Grothoff) 0003475: [exchange] evil customer testsuite (Marcello Stanisci) 0005315: [exchange] re-enable, fix and properly test /keys cherry picking (Christian Grothoff) 0005394: [codeless payments] Pending Order feature for the merchant (shivamkohli) 0005314: [wallet (WebExtensions)] Wallet shows LOTS OF DIRTY COINS (Florian Dold) 0005344: [codeless payments] license headers missing (shivamkohli) 0005345: [codeless payments] README file missing (shivamkohli) 0005346: [codeless payments] codeless payments repo should have GNU-style build system (shivamkohli) 0005348: [codeless payments] implement file uploads for purely digital inventory items (shivamkohli) 0005354: [wallet (WebExtensions)] Fix tslint error and improve code quality (Siyu Lei) 0005357: [codeless payments] Implement accurate version of inventory tracking (shivamkohli) 0005358: [deployment and operations] Lock file should put the BB on "pause". (Marcello Stanisci) 0005359: [wallet (WebExtensions)] Retrieve payment record from indexedDB (Siyu Lei) 0005360: [wallet (WebExtensions)] Show payment record in chart (Siyu Lei) 0005364: [mechant backend] main "lib" test cases fail under Valgrind (Marcello Stanisci) 0005366: [mechant backend] Need payment generator for corner cases. (Marcello Stanisci) 0005384: [codeless payments] Tracking of Shipment (shivamkohli) 0005390: [wallet (WebExtensions)] remove broken toFloat function for amounts (Florian Dold) 0005391: [codeless payments] Improving Error handling (shivamkohli) 0005395: [codeless payments] Prompt the user for shipment details (shivamkohli) 0005396: [codeless payments] Document the code (shivamkohli) 0005401: [wallet (WebExtensions)] Add category into confirmPay api (Siyu Lei) 0005402: [wallet (WebExtensions)] Add budget store (Siyu Lei) 0005403: [wallet (WebExtensions)] Add spending visualization component and budget planning component (Siyu Lei) 0005406: [other] Ambiguous wire transfer cancellation const. (Marcello Stanisci) 0005407: [codeless payments] Testing the django application (shivamkohli) 0005408: [codeless payments] Improve user experience (shivamkohli) 0005420: [exchange] LDADDs in Makefile.am files should reference la files in the build directory (Feideus) 0005277: [exchange] Address WARNINGs in new "cherry pick" test-suite. (Marcello Stanisci) 0005291: [exchange] new test cases: use 'static' where appropriate. (Marcello Stanisci) 0005303: [other] Resume the back-office site. (Marcello Stanisci)       0004930: [other] Render 'conflict' errors due to /track operations. (Marcello Stanisci)             0005365: [mechant backend] Caching results makes testing difficult. (Marcello Stanisci) 0005340: [deployment and operations] Polish taler-deployment-start (Marcello Stanisci) 0005341: [other] Make "new" payments generator the default. (Marcello Stanisci) 0005342: [bank (demonstrator)] malformed exception raised when amount format is bad (Marcello Stanisci) 0005378: [other] Merge payment generators into one command. (Marcello Stanisci) 0005382: [exchange] Signature from exchange tracking information never verified. (Marcello Stanisci) 0005383: [mechant backend] Integrity check on "total_amount" as of /track/transfer is missing. (Marcello Stanisci) 0005389: [exchange] taler-exchange-benchmark fails to run (Marcello Stanisci) 0005306: [other] "Modular" tests for C components. (Marcello Stanisci) 0005305: [documentation] Need chapter on testing technique. (Marcello Stanisci) 0005415: [bank (demonstrator)] Pager doesn't show high page numbers. (Marcello Stanisci) 0005414: [bank (demonstrator)] Public accounts history should be in reverse order (Marcello Stanisci) 0005377: [other] Back-office site style issues. (Marcello Stanisci) 0005321: [exchange] investigate database problems in wirewatch (Christian Grothoff) 0004778: [other] bank, wallet, merchant-frontends have various small usability issues (Marcello Stanisci) 0005268: [bank (demonstrator)] https://bank.demo.taler.net/public-accounts/Bank crashes (Marcello Stanisci) 0005332: [mechant backend] Address FIXMEs at test cases. (Marcello Stanisci) 0005313: [bank (demonstrator)] Bad error handling // Info exposing error when giving account transfer an Intiger overflow (Marcello Stanisci) 0005311: [Web site(s)] Favicon missing on Survey web site (Marcello Stanisci) 0005100: [merchant backend API (C)] taler-merchant-generate-payments expansion to cover /track/ APIs (Marcello Stanisci) 0005304: [twister] Modify objects in upload. (Marcello Stanisci) 0005312: [exchange] list of exchange operations we should test better (Marcello Stanisci) 0005307: [mechant backend] list of merchant's uncovered code paths (Marcello Stanisci) 0005336: [twister] Flipping should respect Crockford encoding. (Marcello Stanisci) 0005334: [twister] Comments missing. (Marcello Stanisci) 0005283: [mechant backend] New test cases lack code comments. (Marcello Stanisci) 0005330: [mechant backend] Sporadic tests failures (Marcello Stanisci) 0005331: [other] Payments generator complains about denom expiration date. (Marcello Stanisci) 0005333: [twister] Machine state not always changed. (Marcello Stanisci) 0004454: [other] fault injection for all GNU Taler APIs (Marcello Stanisci)       0004892: [mechant backend] evil merchant testsuite (Marcello Stanisci)       0004759: [exchange] Fake errors needed (Marcello Stanisci)       0004781: [twister] Error generating MITM (Marcello Stanisci)       0004186: [wallet (WebExtensions)] fault injection should be implemented (Marcello Stanisci) 0005668: [other] taler-auditor-exchange starts with NULL as config file (Christian Grothoff) 0005685: [exchange] test_exchangedb.c gnunet_memcmp refactoring question (Christian Grothoff) 0005156: [django-payments] settings.py missing (Marcello Stanisci) 0005450: [mechant backend] Lib test case _sometimes_ ignores CTRL-C (Marcello Stanisci) 0005461: [deployment and operations] auditor should run alongside test and demo deployment (Marcello Stanisci) 0005227: [bank (demonstrator)] Cover more error paths. (Marcello Stanisci) 0005417: [bank (demonstrator)] no href to 2nd page even though it has 1 entry (Marcello Stanisci) 0005379: [documentation] One and unique glossary is missing. (Christian Grothoff)

0005300: [other] allow message to be shown/hidden when refund is possible/impossible 0005232: [mechant backend] Tip reserve's expiration date not respected. (Marcello Stanisci) 0005288: [merchant backend API (C)] merchant backend should expose instance information via an API (Florian Dold) 0005190: [deployment and operations] test, demo and buildbot do not restart on reboot despite cron job 0003476: [wallet (WebExtensions)] evil exchange testsuite 0005274: [exchange] have (more?) tests for taler-exchange-wirewatch 0004939: [mechant backend] add support for multiple wire methods / accounts per instance 0005299: [mechant backend] merchant should make /refund requests to the exchange and send response to wallet, instead of letting the wallet do it 0005210: [other] merchant's /pay should also accept own signature for replay to save traffic and wallet/merchant storage 0005256: [deployment and operations] repository name should go into build description 0005255: [deployment and operations] sort out logging (Florian Dold) 0005163: [deployment and operations] regenerate config upon each recompilation? 0004439: [deployment and operations] add a buildbot build for taler on a fresh debian container 0004466: [other] figure out a nice way to integrate compiled files in web-common into other repositories 0004880: [other] add images to contracts (Florian Dold) 0005777: [exchange] allow recovering refreshed and partially spent coins (Christian Grothoff) 0005287: [wallet (app)] strings not tagged for translation / tagged oddly (ng0) 0005098: [Web site(s)] --prefix option would be useful (ng0) 0005445: [exchange] emergency payback protocol should support refreshed coins (Christian Grothoff) 0005276: [wallet (WebExtensions)] consider restricting wallet permissions (Florian Dold) 0005775: [wallet (WebExtensions)] test weird corner cases regarding the exchange's /keys info (Florian Dold) 0005774: [wallet (WebExtensions)] add support for creating a reserve from within the wallet and topping it up via payto QR code (Florian Dold) 0005769: [twister] memory leaks in test (Marcello Stanisci) 0005768: [merchant backend API (C)] TALER_MERCHANT_pay_frontend never tested (Marcello Stanisci) 0005374: [merchant backend API (C)] implement fallback to taler-payent URI scheme for browsers that can't support Taler integration (Florian Dold) 0005443: [merchant frontend (blog)] sub-resources should work without cookies (Florian Dold) 0005441: [wallet (WebExtensions)] wallet should have "welcome page" that is opened on nagivation (Florian Dold) 0005470: [auditor] auditor needs proper testing (Christian Grothoff) 0005298: [wallet (WebExtensions)] wallet does not show a good error message on refund when a refund permission has expired (Florian Dold) 0004950: [wallet (browser-based)] spec and implement asynchronous payment api (Florian Dold) 0005213: [wallet (WebExtensions)] wallet's "tree view" should be turned into a human-friendly, detailed balance sheet (Florian Dold) 0005070: [wallet (WebExtensions)] compiler taler-wallet-lib to webassembly (Florian Dold) 0004857: [deployment and operations] make sure that deployment scripts start database to get full test coverage, but only if available (Florian Dold) 0005019: [bank (demonstrator)] taler bank should follow PEP 484 and 526 where applicable (Marcello Stanisci) 0005216: [wallet (WebExtensions)] wallet's auditor editing page should have better copy to explain what auditors do (Florian Dold) 0005215: [wallet (WebExtensions)] wallet history is misleading since fees are not shown (Florian Dold) 0005038: [wallet (WebExtensions)] use smaller URL parsing library, since its included on every page (Florian Dold) 0004748: [wallet (WebExtensions)] errors in edge (Florian Dold) 0004734: [wallet (WebExtensions)] display what the new balance will be when confirming contracts/reserves (Florian Dold) 0004628: [wallet (WebExtensions)] wallet does not support withdraw with loose bank integration (Florian Dold) 0004051: [wallet (WebExtensions)] support two levels of bank integration for creating reserves (Florian Dold) 0004117: [documentation] document fee structure considerations (Florian Dold) 0004819: [wallet (WebExtensions)] wallet should have a list of common currencies and how to render them (Florian Dold)

0005320: [other] consider using pipenv for easier "GNU-Style" installation of packages and deterministic builds 0005767: [auditor] TALER_TESTING_cmd_deposit_confirmation never used (Christian Grothoff) 0005319: [wallet (WebExtensions)] compilation of wallet pulls in a ridiculous number of dependencies (Florian Dold) 0005453: [exchange] do not use fixed amounts for refresh in testing/benchmark (Florian Dold) 0004810: [wallet (WebExtensions)] the wallet should support backup and sync (Florian Dold) 0004096: [documentation] Wallet database scheme needs to be documented. (Florian Dold)

0004402: [exchange] exchange-tools lack testcases 0005310: [exchange] cover http_mhd.c functions 0005309: [exchange] exchange needs more testcases 0005285: [wallet (WebExtensions)] Add owning wallet id to coin database (Florian Dold) 0004379: [wallet (WebExtensions)] error handling: exportable proof for e.g. double spending (Florian Dold) 0004629: [other] certificates for merchant public keys aren't supported (Florian Dold) 0004720: [wallet (WebExtensions)] wallet db has inconsistent naming convensions (Florian Dold)

0002731: [gnunet-setup] "Test configuration" Button does not show error message

0003491: [peerinfo package] monitor functionality is missing (Christian Grothoff)