--- doc/loncapafiles/loncapafiles.lpml 2024/08/18 17:52:16 1.797.2.131.2.22 +++ doc/loncapafiles/loncapafiles.lpml 2022/05/06 19:36:10 1.1028 @@ -2,7 +2,7 @@ "http://lpml.sourceforge.net/DTD/lpml.dtd"> - + @@ -847,6 +868,7 @@ interface, Apache (mod_perl) handlersserver readonly error warnings and icons + never_delete home/httpd/lonUsers @@ -919,12 +941,6 @@ are viewable over the world-wide web modest_delete - home/httpd/html/adm/lonLCDfont - server readonly - LCD font for remote control - - - modest_delete home/httpd/html/adm/lonDomLogos server readonly Logos for LON-CAPA domains @@ -1227,16 +1243,6 @@ parameter. -loncom/cgi/archive.pl -home/httpd/cgi-bin/archive.pl -script - -Create an archive file of specified files in an Authoring Space, -for download by the author. Archive file is either a tar file -(with gzip, bzip2 or xz compression), or a zip file. - - - loncom/cgi/decompress.pl home/httpd/cgi-bin/decompress.pl script @@ -1349,12 +1355,21 @@ utility cgi script to view software vers home/httpd/cgi-bin/lonmodulecheck.pl script -utility cgi script to check for differences between currently -installed versions of LON-CAPA modules and those expected for the +utility cgi script to check for differences between currently +installed versions of LON-CAPA modules and those expected for the LON-CAPA release installed on the server. +loncom/cgi/loncertstatus.pl +home/httpd/cgi-bin/loncertstatus.pl +script + +utility cgi script to display status of LON-CAPA SSL certificates +installed on domain's servers + + + loncom/cgi/ping.pl home/httpd/cgi-bin/ping.pl script @@ -1793,7 +1808,6 @@ LON-CAPA release, starting with 2.10.1 2.11.2.tab; 2.11.3.tab; 2.11.4.tab; -2.11.4.B.tab; @@ -1828,6 +1842,30 @@ server. Updated by loncron. + loncom/connectionrules.tab + home/httpd/lonTabs/connectionrules.tab + www conf + +File containing contection rules for outbound (lonc) and inbound (lond) +connections for this host. Updated by loncron using domain configuration +for host's domain from primary library server for domain. Called by lonssl.pm +and used by lond and LondConnection.pm. + + + + + loncom/hosttypes.tab + home/httpd/lonTabs/hosttypes.tab + www conf + +File containing classification of other hosts in the cluster into one of: +dom, intdom, other (if shares this host's domain, if shares this host's +"internet domain", or neither, respectively). Updated by loncron. +Called by lonssl.pm and used by LondConnection.pm. + + + + loncom/spare.tab home/httpd/lonTabs/spare.tab conf @@ -1940,7 +1978,7 @@ file: nohist_courseids.db found in /home Perl script run by cron to check: (a) for differences between currently installed versions of LON-CAPA modules and those expected for the particular LON-CAPA release -(b) if an updated LON-CAPA release is available from install.loncapa.org +(b) if an updated LON-CAPA release is available from install.loncapa.org @@ -1948,7 +1986,7 @@ and those expected for the particular LO home/httpd/perl/debug/rebuild_lastlogin.pl script -Perl script run as www to populate nohist_crslastlogin.db for course(s) on +Perl script run as www to populate nohist_crslastlogin.db for course(s) on a library server to record most recent "log-in" by each user in a course. This script is intended to be run after installation of LON-CAPA @@ -2021,6 +2059,15 @@ small script to handle the start up of t + loncom/manage_ssl_certs.pl + home/httpd/lonCerts/manage_ssl_certs.pl + script + + Script to create LON-CAPA SSL key, and/or LON-CAPA SSL + certificate signing requests for hostId, and/or hostname. + + + loncom/lond home/httpd/perl/lond script @@ -2109,7 +2156,7 @@ routines in lonauthcgi.pm. Display form loncom/cgi/quotacheck.pl home/httpd/cgi-bin/quotacheck.pl script -CGI script to display disk usage and quota for content +CGI script to display disk usage and quota for content uploaded directly to a course/community via the Course Editor. @@ -2118,10 +2165,10 @@ uploaded directly to a course/community home/httpd/cgi-bin/enrollqueued.pl script CGI script to process a queued self-enrollment request -and output a web address which should be provided as a link the +and output a web address which should be provided as a link the the student follows to access the course. Can support validation of self-enrollment requests on a third party system/server which -handles payment etc. +handles payment etc. @@ -2135,7 +2182,7 @@ the requester follows to access the new has been configued to have a six character code associated with it, the will be output also, (e.g., for recording locally, and/or display to the requester). The script was implemented to support -validation of course requests on a third party system/server which +validation of course requests on a third party system/server which handles payment etc. @@ -2563,7 +2610,7 @@ Handler to check if an external resource home/httpd/lib/perl/Apache/lonexttool.pm handler -Handler to allow LON-CAPA to operate as an LTI Consumer +Handler to allow LON-CAPA to operate as an LTI Consumer works/unverified @@ -2600,7 +2647,7 @@ as an LTI Consumer. home/httpd/lib/perl/Apache/ltilogout.pm handler -Handler to logout a LON-CAPA user session on callback from an LTI Consumer +Handler to logout a LON-CAPA user session on callback from an LTI Consumer which launched the session, when user logs out of session on Consumer. works/unverified @@ -2620,7 +2667,7 @@ Common routines for LTI (Consumer or Pro interface file Meta file which specifies package source for external tool (LTI) without passback -of grades +of grades @@ -2669,20 +2716,20 @@ Handler for a DC to pick an author from works/unverified -loncom/interface/lonpickuser.pm -home/httpd/lib/perl/Apache/lonpickuser.pm +loncom/interface/lonpickresource.pm +home/httpd/lib/perl/Apache/lonpickresource.pm handler -Handler to pick a user from a directory search +Handler to pick a resource or folder from the course contents works/unverified -loncom/interface/loncourseuser.pm -home/httpd/lib/perl/Apache/loncourseuser.pm +loncom/interface/lonpickuser.pm +home/httpd/lib/perl/Apache/lonpickuser.pm handler -Handler to check if a user has a role (active, future or previous) in a course. +Handler to pick a user from a directory search works/unverified @@ -3044,7 +3091,6 @@ add_link.gif; anno.gif; anot.gif; anot2.gif; -archive.gif; authorRemote.gif; author_example_directory.gif; author_new_content.gif; @@ -3067,11 +3113,6 @@ cprv.gif; creatingANewCourse.gif; creatingNewProblemResource.gif; crsconf.gif; -daxecollapsible.gif; -daxeleftpanel.gif; -daxeradio.gif; -daxetoolbar.gif; -daxeui.gif; delete.gif; docs.gif; document-open.gif; @@ -3151,7 +3192,6 @@ pref.gif; preferences-desktop-font.gif; preferences-desktop-locale.gif; preferences-desktop-theme.gif; -printout.gif; problem_editing_colorful.gif; problem_editing_xml.gif; problem_testing.gif; @@ -3266,7 +3306,6 @@ add_link.eps; anno.eps; anot.eps; anot2.eps; -archive.eps; authorRemote.eps; author_example_directory.eps; author_new_content.eps; @@ -3289,11 +3328,6 @@ cprv.eps; creatingANewCourse.eps; creatingNewProblemResource.eps; crsconf.eps; -daxecollapsible.eps; -daxeleftpanel.eps; -daxeradio.eps; -daxetoolbar.eps; -daxeui.eps; delete.eps; docs.eps; document-open.eps; @@ -3480,19 +3514,8 @@ Annotation.tex; Authentication.tex; Auth_Options.tex; Authoring_Adding_Pictures.tex; -Authoring_Archiving_Directory.tex; +Authoring_CustomResponse.tex; Authoring_DataResponse.tex; -Authoring_Daxe_CSS.tex; -Authoring_Daxe_FAQ.tex; -Authoring_Daxe_Introduction.tex; -Authoring_Daxe_Left_Panel.tex; -Authoring_Daxe_Math.tex; -Authoring_Daxe_Menus.tex; -Authoring_Daxe_Radiobuttonresponse.tex; -Authoring_Daxe_Templates.tex; -Authoring_Daxe_Toolbar.tex; -Authoring_Daxe_UI.tex; -Authoring_Daxe_Variables.tex; Authoring_Dynamic_Plot_Axes.tex; Authoring_Dynamic_Plot_Color_Selection.tex; Authoring_Dynamic_Plot_Curve_Data.tex; @@ -3506,8 +3529,10 @@ Authoring_Dynamic_Plot.tex; Authoring_Dynamic_Plot_Tics.tex; Authoring_Dynamic_Plot_Title_X_Y_Label.tex; Authoring_Equations.tex; +Authoring_EssayResponse.tex; Authoring_ExternalResponse.tex; Authoring_Foil_Structure_Tags.tex; +Authoring_FormulaResponse.tex; Authoring_Hint_Tags.tex; Authoring_HTML_vs_Tex.tex; Authoring_ImageResponse.tex; @@ -3515,18 +3540,23 @@ Authoring_Input_Tags.tex; Authoring_Internal_Tags.tex; Authoring_Intro.tex; Authoring_Library_Scripts.tex; +Authoring_MatchResponse.tex; Authoring_Math_Editor.tex; Authoring_Multilingual_Problems.tex; Authoring_NumericalResponse.tex; Authoring_OptionResponse.tex; +Authoring_OrganicResponse.tex; Authoring_Output_Tags.tex; Authoring_Pictures_EPS.tex; Authoring_Piecewise_Plot.tex; Authoring_RadiobuttonResponse.tex; +Authoring_RankResponse.tex; +Authoring_ReactionResponse.tex; Authoring_Response_Attributes.tex; Authoring_Responseparam_Parameter.tex; Authoring_Response_Tag_Intro.tex; Authoring_Scripting_Tags.tex; +Authoring_StringResponse.tex; Authoring_Structure_Tags.tex; Authoring_Surveys.tex; Authoring_WebDAV.tex; @@ -3604,6 +3634,7 @@ Course_Creation_Log.tex; Course_Critical_Message.tex; Course_Deleting.tex; Course_Disable_Discussion.tex; +Course_Disable_Anonymous_Discussion.tex; Course_Discussion_Board.tex; Course_Drop_Student.tex; Course_Edit_Content.tex; @@ -3624,7 +3655,6 @@ Course_Parameter_Levels.tex; Course_Parameter_Table_Mode.tex; Course_Prefs_Bridgetasks.tex; Course_Prefs_Display.tex; -Course_Prefs_ExternalTools.tex; Course_Prefs_Grading.tex; Course_Prefs_Printouts.tex; Course_Prefs_Classlists.tex; @@ -3724,7 +3754,6 @@ Docs_Viewing_Course_Doc.tex; Docs_Web_Page.tex; Domain_Change_Logs.tex; Domain_Change_Privileges.tex; -Domain_Configuration_Author_Defaults.tex; Domain_Configuration_Auto_Creation.tex; Domain_Configuration_Auto_Enrollment.tex; Domain_Configuration_Auto_Updates.tex; @@ -3749,6 +3778,7 @@ Domain_Configuration_Self_Creation.tex; Domain_Configuration_Selfenrollment.tex; Domain_Configuration_Server_Status.tex; Domain_Configuration_SSL.tex; +Domain_Configuration_Trust.tex; Domain_Configuration_User_Creation.tex; Domain_Configuration_User_Modification.tex; Domain_Configuration_User_Sessions.tex; @@ -3759,8 +3789,6 @@ Domain_Create_Users.tex; Domain_Crontab_Entries.tex; Domain_Editing_Custom_Roles.tex; Domain_Manual_Title_Page.tex; -Domain_Modify_Course.tex; -Domain_Modify_Community.tex; Domain_Role_Approvals.tex; Domain_Role_Logs.tex; Domain_User_Access_Logs.tex; @@ -4182,6 +4210,19 @@ status.txt; unicover.txt; + + + *.js + loncom/html/adm/quicksearch/ + home/httpd/html/adm/quicksearch/ + +Search to enable the quicksearch function in the author space + + +quicksearch.js + + + loncom/html/adm/fonts/AUTHORS home/httpd/html/adm/fonts/AUTHORS @@ -4574,6 +4615,14 @@ loncom/build/pod2html.sh ../homework/edi +loncom/publisher/loncoursepub.pm +home/httpd/lib/perl/Apache/loncoursepub.pm +handler + +Handler for asynchronous file upload via colorful editor ("Course Authoring" space). + + + loncom/interface/lonmeta.pm home/httpd/lib/perl/Apache/lonmeta.pm handler @@ -5004,7 +5053,6 @@ commands loncom/html/adm/daxe/commands; loncom/html/adm/daxe/daxe.tar.gz; -loncom/html/adm/daxe/VERSION; @@ -5038,7 +5086,7 @@ loncom/html/adm/MathJax/mathjax-MathJax- - loncom/html/adm/geogebra/geogebraweb_4.4.tar.gz + loncom/html/adm/geogebra/geogebraweb_5.0.tar.gz home/httpd/html/adm/geogebra/web script @@ -5050,7 +5098,7 @@ commands loncom/html/adm/geogebra/commands; loncom/html/adm/geogebra/VERSION; -loncom/html/adm/geogebra/geogebraweb_4.4.tar.gz; +loncom/html/adm/geogebra/geogebraweb_5.0.tar.gz; @@ -5193,8 +5241,8 @@ JQuery countdown timer javascript files jquery.countdown-ar.js; jquery.countdown-bg.js; - jquery.countdown-bs.js; jquery.countdown-bn.js; + jquery.countdown-bs.js; jquery.countdown-ca.js; jquery.countdown-cs.js; jquery.countdown-cy.js; @@ -5282,7 +5330,7 @@ JQuery countdown timer Image file for LE - *.js + *.* loncom/html/adm/jQuery/addons/ home/httpd/html/adm/jQuery/addons/ script @@ -5346,6 +5394,7 @@ Addons for jQuery + *.* loncom/html/adm/jQuery/js/ @@ -5355,8 +5404,8 @@ Addons for jQuery jQuery custom distribution of version 3.2.1, UI version 1.12.1 - jquery-3.2.1.min.js; - jquery-ui-1.12.1.custom.min.js; + jquery-3.2.1.min.js; + jquery-ui-1.12.1.custom.min.js; @@ -5667,6 +5716,15 @@ Handles a searches inside courses/commun works/unverified +loncom/interface/lonindexcourse.pm +home/httpd/lib/perl/Apache/lonindexcourse.pm +handler + +Course/community Indexer + +works/unverified + + loncom/interface/lonmysql.pm home/httpd/lib/perl/Apache/lonmysql.pm handler @@ -5957,22 +6015,22 @@ Displays the Main menu works/unverified -loncom/interface/lonremote.pm -home/httpd/lib/perl/Apache/lonremote.pm +loncom/interface/portfolio.pm +home/httpd/lib/perl/Apache/portfolio.pm handler -Handler to launch and collapse the remote control. +Handler to manage user portfolios -works/unverified +unverified -loncom/interface/portfolio.pm -home/httpd/lib/perl/Apache/portfolio.pm +loncom/interface/lonplacementtest.pm +home/httpd/lib/perl/Apache/lonplacementtest.pm handler -Handler to manage user portfolios +Placement test status and completion. -unverified +works/unverified rat/lonpageflip.pm @@ -6009,15 +6067,6 @@ Creates horizontal menubar in advanced R works/unverified -loncom/html/res/adm/pages/homeworkmenu.html -home/httpd/html/res/adm/pages/homeworkmenu.html -handler - -Homework remote control. - -works/unverified - - loncom/html/res/adm/pages/chatroom.html home/httpd/html/res/adm/pages/chatroom.html handler @@ -6856,7 +6905,7 @@ by the URL-related pattern syntax: loncom/auth/lonslotcheck.pm home/httpd/lib/perl/Apache/lonslotcheck.pm handler -Checks if access to a non-gradable external tool uses slots. +Checks if access to a non-gradable external tool uses slots. Disable subsequent PerlHandlers if a slot is in use, and slot status does not currently allow access. @@ -6884,16 +6933,6 @@ not currently allow access. works/unverified -loncom/auth/lonlinkexit.pm -home/httpd/lib/perl/Apache/lonlinkexit.pm -handler - -logout session launched via deep link and escape iframe and redirect -(for LTI-protected link and appropriate Link Protection setting in course) - -works/unverified - - loncom/auth/migrateuser.pm home/httpd/lib/perl/Apache/migrateuser.pm handler @@ -6922,16 +6961,6 @@ logout session launched via deep link an works/unverified - loncom/auth/lonrelaunch.pm - home/httpd/lib/perl/Apache/lonrelaunch.pm - handler - For a deep link protected by LTI where username is included - in launch payload, expire user's current session if username - from payload does not match username in LON-CAPA session. - - works/unverified - - loncom/auth/lonshibauth.pm home/httpd/lib/perl/Apache/lonshibauth.pm handler @@ -7026,8 +7055,8 @@ loncom/build/pod2html.sh ../auth/lonrole home/httpd/lib/perl/Apache/lontiny.pm handler -Extract domain, courseID, and symb from a shortened URL and and switch role -to a role in designated course. If the user has multiple active roles in a +Extract domain, courseID, and symb from a shortened URL and and switch role +to a role in designated course. If the user has multiple active roles in a course, and one is a Coordinator role, that role will be selected, otherwise a list of available roles will be displayed for the user to select one. @@ -7450,7 +7479,6 @@ eps.gif; eps_big.gif; exam.gif; exam_big.gif; -externallink.gif; face-angel.png; face-angry.png; face-cool.png; @@ -7532,8 +7560,6 @@ mpg.gif; navmap.correct.gif; navmap.partial.gif; navmap.ellipsis.gif; -navmap.none.closed.gif; -navmap.none.open.gif; navmap.open.gif; navmap.page.open.gif; navmap.page.closed.gif; @@ -7716,6 +7742,16 @@ dependency on Config.pm and Scalar::Util works/verified + loncom/LWPReq.pm + home/httpd/lib/perl/LONCAPA/LWPReq.pm + system file + + Wrapper for LWP UserAgent to support enabling/disabling certificate + verification and/or hostname validation on any of LWP 5.83X and LWP 6.X + + works/verified + + loncom/Lond.pm home/httpd/lib/perl/LONCAPA/Lond.pm system file @@ -7812,6 +7848,16 @@ language lexicons, and static configurat works/unverified +loncom/configuration/SSL.pm +home/httpd/lib/perl/LONCAPA/SSL.pm +system file + +Provides routine to generate display of status of LON-CAPA SSL certificates +installed on domain's servers. + +works/unverified + + loncom/ConfigFileEdit.pm home/httpd/lib/perl/LONCAPA/ConfigFileEdit.pm system file @@ -8234,61 +8280,6 @@ tmcc.tab; *.gif -loncom/html/adm/lonLCDfont/ -home/httpd/html/adm/lonLCDfont/ -graphic file -LON-CAPA remote control LCD font - -0.gif; -1.gif; -2.gif; -3.gif; -4.gif; -5.gif; -6.gif; -7.gif; -8.gif; -9.gif; -a.gif; -b.gif; -c.gif; -d.gif; -e.gif; -f.gif; -g.gif; -h.gif; -i.gif; -j.gif; -k.gif; -l.gif; -m.gif; -n.gif; -o.gif; -p.gif; -q.gif; -r.gif; -s.gif; -t.gif; -u.gif; -v.gif; -w.gif; -x.gif; -y.gif; -z.gif; -ä.gif; -ö.gif; -ü.gif; -ä.gif; -ö.gif; -ü.gif; -colon.gif; -hyphen.gif; -slash.gif; -space.gif; - - - -*.gif loncom/html/res/adm/pages/pt/ home/httpd/html/res/adm/pages/pt/ graphic file @@ -8318,6 +8309,7 @@ pref_pt.gif; prt_pt.gif; res_pt.gif; roles_pt.gif; +sbkm_pt.gif; spacer_pt.gif; sprs_pt.gif; src_pt.gif; @@ -8332,101 +8324,34 @@ vbkm_pt.gif; graphic file icons used for the entire LON-CAPA user interface -alnk.gif; -anno.gif; -anot.gif; -anot2.gif; -back.gif; -bchat.gif; -bkm.gif; -blog.gif; -brws.gif; -catalog.gif; -ccat.gif; -ccrs.gif; chat.gif; -chrt.gif; close-all-folders.gif; -close-navigation.gif; -clst.gif; -com.gif; -conf.gif; -courses.gif; -cprv.gif; -crsconf.gif; -cstr.gif; -del.gif; -dempty.gif; dempty.gif; -docs.gif; edittoplevel.gif; -egrd.gif; empty.gif; -enrl.gif; -eval.gif; -fdbk.gif; feedback.gif; -forw.gif; -grds.gif; -grps.gif; group.gif; help.gif; info.gif; -keys.gif; ledblink.gif; ledgreen.gif; ledoff.gif; ledon.gif; -ledsend.gif; -list.gif; -logout.gif; -mail.gif; -mcrs.gif; mark-discussionentries-read.gif; minitabmenu_bg.gif; minitabmenu_left.gif; minitabmenu_left_on.gif; minitabmenu_right.gif; minitabmenu_right_on.gif; -mrk.gif; -nav.gif; -new.gif; next.gif; nothumb.gif; open-all-folders.gif; open-first-problem.gif; -printout.gif; -pdfupload.gif; -parm.gif; -pcstr.gif; -pgrd.gif; -port.gif; -pparm.gif; -pref.gif; -prt.gif; -pub.gif; qempty.gif; -rcrs.gif; refresh.gif; -reload.gif; -remotebg.gif; -res.gif; -roles.gif; -rsrv.gif; -rtrv.gif; -sctr.gif; show-all.gif; show-incomplete-problems.gif; -slnk.gif; -spacer.gif; -sprs.gif; -src.gif; -srvr.gif; star.gif; -start-navigation.gif; -stat.gif; -subm.gif; -title.gif; @@ -8460,6 +8385,7 @@ anot.png; anot2.png; blog.png; chrt.png; +copy.png; cprv.png; del.png; egrd.png; @@ -8471,8 +8397,8 @@ parm.png; port.png; prt.png; rcrs.png; +rename.png; rsrv.png; -slnk.png; src.png; srvr.png; subm.png; @@ -8506,6 +8432,7 @@ mngcu.png; prob_ana.png; process-stop.png; role_hotlist.png; +reload.png; self_enroll.png; survey_rep.png; subdocs.png; @@ -8520,8 +8447,6 @@ uplusr.png; graphic file graphical icons used in submenus -alnk.png; -archive.png; aboutme.png; addClickerInfoFile.png; anonsurveythreshold.png; @@ -8529,7 +8454,6 @@ bubblesheet.png; ccatconf.png; ccat-22x22.png; chat.png; -collapsed.png; comblock.png; contact-new.png; contact-new-22x22.png; @@ -8554,7 +8478,6 @@ edit-undo-22x22.png; emblem-photos.png; emblem-readonly.png; emblem-system.png; -expanded.png; extres.png; exttool.png; folder-new.png; @@ -8592,8 +8515,8 @@ preferences-desktop-remote-desktop.png; preferences-desktop-theme.png; preferences-desktop-wallpaper.png; preferences-system-windows.png; -receipt_number.png; rcrs-22x22.png; +receipt_number.png; recover.png; remotecontrol.png; resversion.png; @@ -8615,14 +8538,12 @@ symbs.png; system-lock-screen.png; system-users.png; timer.png; -timezone.png; trck-22x22.png; ungrade_sub.png; uplcrs.png; uploadscores.png; verify.png; view-mode-22x22.png; -viewuser.png; wishlist.png; wishlist-link.png; wishlist-link-lighter.png; @@ -8637,14 +8558,6 @@ wishlist-link-lighter.png; -loncom/html/res/adm/pages/imgmaps.html -home/httpd/html/res/adm/pages/imgmaps.html -interface file - -image maps for the LON-CAPA remote control - - - loncom/html/res/adm/pages/index.html home/httpd/html/res/adm/pages/index.html interface file @@ -8652,14 +8565,6 @@ image maps for the LON-CAPA remote contr welcoming page to the LON-CAPA system upon login - -loncom/html/res/adm/pages/menu.html -home/httpd/html/res/adm/pages/menu.html -interface file - -renders the HTML (including image maps) for the LON-CAPA remote control - - *.gif loncom/html/res/adm/pages/indexericons/ @@ -8940,6 +8845,7 @@ etc/rc6.d/K05loncontrol symbolic links to /etc/rc.d/init.d/loncontrol (redhat/fedora) or /etc/init.d/loncontrol (suse/debian) for run-levels + loncom/init.d/loncontrol etc/rc.d/ @@ -9223,7 +9129,7 @@ Module for displaying the wishlist.home/httpd/lib/perl/Apache/lonrelrequtils.pm handler -Utilities to update information about LON-CAPA version requirements +Utilities to update information about LON-CAPA version requirements in a course. works/unverified