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-% ----------------------------------------------------------------------------
-% the XSIM package - definitions module
-% 
-%   eXercise Sheets IMproved
-% 
-% ----------------------------------------------------------------------------
-% Clemens Niederberger
-% Web:    https://github.com/cgnieder/xsim
-% E-Mail: contact@mychemistry.eu
-% ----------------------------------------------------------------------------
-% Copyright 2017--2020 Clemens Niederberger
-% 
-% This work may be distributed and/or modified under the
-% conditions of the LaTeX Project Public License, either version 1.3
-% of this license or (at your option) any later version.
-% The latest version of this license is in
-%   http://www.latex-project.org/lppl.txt
-% and version 1.3 or later is part of all distributions of LaTeX
-% version 2005/12/01 or later.
-% 
-% This work has the LPPL maintenance status `maintained'.
-% 
-% The Current Maintainer of this work is Clemens Niederberger.
-% ----------------------------------------------------------------------------
-% If you have any ideas, questions, suggestions or bugs to report, please
-% feel free to contact me.
-% ----------------------------------------------------------------------------
-\XSIMmodule{definitions}{definition of user commands}
-
-\xsim_load_modules:n {base,exercises,blanks,translations,interface,grades,random}
-
-% not exactly a user choice: the `exercises' environments rely on them:
-\DeclareExerciseParameter*!{exercise-env}
-\DeclareExerciseParameter*!{solution-env}
-\DeclareExerciseParameter !{exercise-name}
-\DeclareExerciseParameter !{solution-name}
-\DeclareExerciseParameter  {exercises-name}
-\DeclareExerciseParameter  {solutions-name}
-\DeclareExerciseParameter !{exercise-template}
-\DeclareExerciseParameter !{solution-template}
-\DeclareExerciseParameter* {counter}
-\DeclareExerciseParameter* {solution-counter}
-\DeclareExerciseParameter* {number}
-
-% these are additional - but are used in the `default' environment
-% template:
-\DeclareExerciseParameter  {exercise-heading}
-\DeclareExerciseParameter  {solution-heading}
-
-% ----------------------------------------------------------------------------
-
-% not exactly a user choice, must be present at various places:
-\DeclareExerciseProperty!  {id}
-\DeclareExerciseProperty!  {ID}
-\DeclareExerciseProperty   {counter}
-\DeclareExerciseProperty   {counter-value}
-\DeclareExerciseProperty * {print}
-\DeclareExerciseProperty *-{print!}
-\DeclareExerciseProperty * {use}
-\DeclareExerciseProperty * {used}
-\DeclareExerciseProperty *-{use!}
-\DeclareExerciseProperty * {solution}
-\XSIMifchapterT{
-  \DeclareExerciseProperty {chapter-value}
-  \DeclareExerciseProperty {chapter}
-}
-\DeclareExerciseProperty  {section-value}
-\DeclareExerciseProperty  {section}
-\DeclareExerciseProperty  {sectioning}
-
-% those are additional and wouldn't *need* to be present except for
-% pre-defined templates which make use of them (the page and page-value
-% property actually needs to be defined for xsim to be able to save the
-% corresponding values):
-\DeclareExerciseProperty  {subtitle}
-\DeclareExerciseProperty  {points}
-\DeclareExerciseProperty  {bonus-points}
-\DeclareExerciseProperty  {page-value}
-\DeclareExerciseProperty  {page}
-
-\DeclareExercisePropertyAlias {ID} {id}
-
-% ----------------------------------------------------------------------------
-
-\DeclareExerciseTagging {tags}
-\DeclareExerciseTagging {topics}
-
-\xsimsetup{tags/ignore-untagged=false}
-
-% ----------------------------------------------------------------------------
-
-\DeclareExerciseGoal {points}
-\DeclareExerciseGoal {bonus-points}
-
-\NewDocumentCommand \printgoal {m}
-  { \ExerciseGoalValuePrint {#1} {} {} }
-
-\NewDocumentCommand \points {m}
-  {
-    \ExerciseGoalValuePrint {#1}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-\NewDocumentCommand \addpoints {sm}
-  {
-    \AddtoExerciseGoal {points} {#2}
-    \IfBooleanF {#1} { \points {#2} }
-  }
-
-\NewDocumentCommand \printpoints {m}
-  {
-    \TotalExerciseTypeGoal {#1} {points}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-\NewDocumentCommand \printtotalpoints {}
-  {
-    \TotalExerciseGoal {points}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-\NewDocumentCommand \addbonus {sm}
-  {
-    \AddtoExerciseGoal {bonus-points} {#2}
-    \IfBooleanF {#1} { \points {#2} }
-  }
-
-\NewDocumentCommand \printbonus {m}
-  {
-    \TotalExerciseTypeGoal {#1} {bonus-points}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-\NewDocumentCommand \printtotalbonus {}
-  {
-    \TotalExerciseGoal {bonus-points}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-% ----------------------------------------------------------------------------
-\NewDocumentCommand \pointsforgrade {m}
-  {
-    \GetGradeRequirementForGoal {#1} {points}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-\NewDocumentCommand \goalsforgrade {mm}
-  {
-    \GetGradeRequirementForGoals {#2} {#1}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-\NewDocumentCommand \totalgoalforgrade {m}
-  {
-    \GetGradeRequirement {#1}
-      { \, \XSIMtranslate {point} }
-      { \, \XSIMtranslate {points} }
-  }
-
-% ----------------------------------------------------------------------------
-
-\xsim_if_package_blank:F
-  {
-    \DeclareExerciseType {exercise} {
-      exercise-env      = exercise ,
-      solution-env      = solution ,
-      exercise-name     = \XSIMtranslate {exercise} ,
-      exercises-name    = \XSIMtranslate {exercises} ,
-      solution-name     = \XSIMtranslate {solution} ,
-      solutions-name    = \XSIMtranslate {solutions} ,
-      exercise-template = default ,
-      solution-template = default ,
-      exercise-heading  = \subsection* ,
-      solution-heading  = \subsection*
-    }
-  }
-
-% ----------------------------------------------------------------------------
-
-\DeclareExerciseEnvironmentTemplate {default}
-  {
-    \GetExerciseHeadingF { \subsection* }
-    {
-      \XSIMmixedcase { \GetExerciseName } \nobreakspace
-      \GetExerciseProperty {counter}
-      \IfInsideSolutionF
-        {
-          \IfExercisePropertySetT {subtitle}
-            { ~ { \normalfont \itshape \GetExerciseProperty {subtitle} } }
-        }
-    }
-    \GetExercisePropertyT {points}
-      {
-        \marginpar
-          {
-            \IfInsideSolutionF { \rule {1.2cm} {1pt} \slash }
-            \printgoal {\PropertyValue}
-            \GetExercisePropertyT {bonus-points}
-              { \nobreakspace ( + \printgoal {\PropertyValue} ) }
-            \nobreakspace\XSIMtranslate {point-abbr}
-          }
-      }
-  }
-  { \par }
-
-% ----------------------------------------------------------------------------
-
-\DeclareExerciseHeadingTemplate {none} {}
-
-\DeclareExerciseHeadingTemplate {default}
-  { \section* { \XSIMtranslate {default-heading} } }
-
-\DeclareExerciseHeadingTemplate {collection}
-  { \section* { \XSIMtranslate {collection-heading} } }
-
-\DeclareExerciseHeadingTemplate {per-section}
-  { \section* { \XSIMtranslate {per-section-heading} } }
-  
-\DeclareExerciseHeadingTemplate {per-chapter}
-  { \section* { \XSIMtranslate {per-chapter-heading} } }
-
-% ----------------------------------------------------------------------------
-
-\RequirePackage{array,booktabs}
-
-\DeclareExerciseTableTemplate {default*}
-  {
-    \XSIMputright \ExerciseTableCode
-      {
-        \toprule
-        \XSIMifblankTF {\ExerciseType}
-          {}
-          { \XSIMmixedcase { \GetExerciseParameter {exercise-name} } }
-        &
-      }
-    \ForEachUsedExerciseByType
-      {
-        \XSIMifeqTF {#1} { \ExerciseTableType {#1} }
-          {
-            \XSIMifblankTF { \ExerciseType }
-              {
-                \XSIMputright \ExerciseTableCode
-                  {
-                    \XSIMmixedcase
-                      { \ExerciseParameterGet {#1} {exercise-name} ~ }
-                  }
-              }
-              {}
-            \XSIMputright \ExerciseTableCode { #3 & }
-          }
-          {}
-      }
-    \XSIMputright \ExerciseTableCode
-      {
-        \XSIMtranslate {total} \\
-        \midrule \XSIMmixedcase { \XSIMtranslate {points} } &
-      }
-    \ForEachUsedExerciseByType
-      {
-        \XSIMifeqTF {#1} { \ExerciseTableType {#1} }
-          {
-            \XSIMputright \ExerciseTableCode
-              { \XSIMifblankTF {#5} {\printgoal{0}} {\printgoal{#5}} & }
-          }
-          {}
-      }
-    \XSIMputright \ExerciseTableCode
-      {
-        \XSIMifblankTF {\ExerciseType}
-          { \TotalExerciseGoal {points} {} {} }
-          { \TotalExerciseTypeGoal {\ExerciseType} {points} {} {} }
-        \\ \midrule
-        \XSIMtranslate {reached} &
-      }
-    \ForEachUsedExerciseByType
-      {
-        \XSIMifeqTF {#1} { \ExerciseTableType {#1} }
-          { \XSIMputright \ExerciseTableCode {&} }
-          {}
-      }
-    \XSIMputright \ExerciseTableCode { \\ \bottomrule }
-    \def\numberofcolumns{
-      \XSIMifblankTF {\ExerciseType}
-        {\numberofusedexercises}
-        {\csname numberof \ExerciseType s\endcsname}
-      }
-    \XSIMifeqF{\numberofcolumns}{0}
-      {
-        \begin {tabular} {l*{\numberofcolumns}{c}c}
-          \ExerciseTableCode
-        \end {tabular}
-      }
-  }
-
-\DeclareExerciseTableTemplate {default}
-  {
-    \XSIMputright \ExerciseTableCode
-      {
-        \toprule
-        \XSIMifblankTF {\ExerciseType}
-          {}
-          { \XSIMmixedcase { \GetExerciseParameter {exercise-name} } }
-        &
-        \XSIMmixedcase { \XSIMtranslate {points} } &
-        \XSIMtranslate {reached} \\
-        \midrule
-      }
-    \ForEachUsedExerciseByType
-      {
-        \XSIMifeqTF {#1} { \ExerciseTableType {#1} }
-          {
-            \XSIMifblankTF { \ExerciseType }
-              {
-                \XSIMputright \ExerciseTableCode
-                  {
-                    \XSIMmixedcase
-                      { \ExerciseParameterGet {#1} {exercise-name} ~ }
-                  }
-              }
-              {}
-            \XSIMputright \ExerciseTableCode
-              { #3 & \XSIMifblankTF {#5} {\printgoal{0}} {\printgoal{#5}} & \\ }
-          }
-          {}
-      }
-    \XSIMputright \ExerciseTableCode
-      {
-        \midrule
-        \XSIMtranslate {total} &
-        \XSIMifblankTF {\ExerciseType}
-          { \TotalExerciseGoal {points} {} {} }
-          { \TotalExerciseTypeGoal {\ExerciseType} {points} {} {} } &
-        \\ \bottomrule
-      }
-    \XSIMexpandcode
-      {
-        \noexpand \begin {tabular} {\XSIMifblankTF{\ExerciseType}{l}{c}cc}
-          \noexpand \ExerciseTableCode
-        \noexpand \end {tabular}
-      }
-  }
-
-% ----------------------------------------------------------------------------
-
-\DeclareExerciseTranslations {exercise} {
-  Fallback = exercise ,
-  English  = exercise ,
-  French   = exercice ,
-  German   = \"Ubung
-}
-
-\DeclareExerciseTranslations {exercises} {
-  Fallback = exercises ,
-  English  = exercises ,
-  French   = exercices ,
-  German   = \"Ubungen
-}
-
-\DeclareExerciseTranslations {question} {
-  Fallback = question ,
-  English  = question ,
-  French   = question ,
-  German   = Aufgabe
-}
-
-\DeclareExerciseTranslations {questions} {
-  Fallback = questions ,
-  English  = questions ,
-  French   = questions ,
-  German   = Aufgaben
-}
-
-\DeclareExerciseTranslations {solution} {
-  Fallback = solution ,
-  English  = solution ,
-  French   = solution ,
-  German   = L\"osung
-}
-
-\DeclareExerciseTranslations {solutions} {
-  Fallback = solutions ,
-  English  = solutions ,
-  French   = solutions ,
-  German   = L\"osungen
-}
-
-\DeclareExerciseTranslations {point-abbr} {
-  Fallback = p. ,
-  English  = p. ,
-  French   = p. ,
-  German   = P.
-}
-
-\DeclareExerciseTranslations {point} {
-  Fallback = point ,
-  English  = point ,
-  French   = point ,
-  German   = Punkt
-}
-
-\DeclareExerciseTranslations {points} {
-  Fallback = points ,
-  English  = points ,
-  French   = points ,
-  German   = Punkte
-}
-
-\DeclareExerciseTranslations {reached} {
-  Fallback = reached ,
-  English  = reached ,
-  French   = obtenus ,
-  German   = erreicht
-}
-
-\DeclareExerciseTranslations {total} {
-  Fallback = total ,
-  English  = total ,
-  French   = total ,
-  German   = insgesamt
-}
-
-\DeclareExerciseTranslations {default-heading} {
-  Fallback = \XSIMmixedcase { \GetExerciseParameter {solutions-name} }~
-             to~ the~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ,
-  English  = \XSIMmixedcase { \GetExerciseParameter {solutions-name} }~
-             to~ the~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ,
-  French   = \XSIMmixedcase { \GetExerciseParameter {solutions-name} ~
-             des~ \GetExerciseParameter {exercises-name} } ,
-  German   = \XSIMmixedcase { \GetExerciseParameter {solutions-name} }~
-             zu~ den~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} }
-}
-
-\DeclareExerciseTranslations {collection-heading} {
-  Fallback = \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ,
-  English  = \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ,
-  French   = \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ,
-  German   = \XSIMmixedcase { \GetExerciseParameter {exercises-name} }
-}
-
-\DeclareExerciseTranslations {per-section-heading} {
-  Fallback = \XSIMmixedcase { \GetExerciseParameter {solutions-name} } ~
-             to~ the~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ~
-             of~ Section \nobreakspace \ExerciseSection ,
-  English  = \XSIMmixedcase { \GetExerciseParameter {solutions-name} } ~
-             to~ the~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ~
-             of~ Section \nobreakspace \ExerciseSection ,
-  French   = \XSIMmixedcase { \GetExerciseParameter {solutions-name} ~
-             des~ \GetExerciseParameter {exercises-name} ~ de~ la~
-             section \nobreakspace \ExerciseSection } ,
-  German   = \XSIMmixedcase { \GetExerciseParameter {solutions-name} } ~
-             zu~ den~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} }~
-             in~ Abschnitt \nobreakspace \ExerciseSection
-}
-
-\DeclareExerciseTranslations {per-chapter-heading} {
-  Fallback = \XSIMmixedcase { \GetExerciseParameter {solutions-name} } ~
-             to~ the~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ~
-             of~ Chapter \nobreakspace \ExerciseChapter ,
-  English  = \XSIMmixedcase { \GetExerciseParameter {solutions-name} } ~
-             to~ the~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ~
-             of~ Chapter \nobreakspace \ExerciseChapter ,
-  French   = \XSIMmixedcase { \GetExerciseParameter {solutions-name} ~
-             des~ \GetExerciseParameter {exercises-name} ~
-             du~ chapitre \nobreakspace \ExerciseChapter } ,
-  German   = \XSIMmixedcase { \GetExerciseParameter {solutions-name} } ~
-             zu~ den~ \XSIMmixedcase { \GetExerciseParameter {exercises-name} } ~
-             in~ Kapitel \nobreakspace \ExerciseChapter
-}
-
-% ----------------------------------------------------------------------------
-\file_input_stop:
-
-2019/02/17 - fix issue #39 (error in German translations)
-2020/02/19 - implement issue #33 (solution property)
-2020/02/20 - implement issue #31 (blank package option)