refactor

README.md

@@ -20,7 +20,7 @@ A summary is then printed on the front page.
 
 Writing an exam is now easy:
 
-    #import "@local/exam:0.1.0": exam, exercise_header, exercise_items, mtext
+    #import "@local/exam:0.1.0": exam, exercise, exercise-items, mtext
 
     #show: exam.with(
         title: "Exam",
@@ -32,7 +32,7 @@ Writing an exam is now easy:
         date: "1. January 1970",
         course_short_title: "ABC & EFG",
 
-        course_number: "π",
+        course_code: "π",
         duration_minutes: "90", 
 
         ask_trainer_name: false,
@@ -43,37 +43,59 @@ Writing an exam is now easy:
 
 ### Defining exercises and items
 
-A new exercise can be started using `#exercise_header("title", nb_points)`, for example:
+A new exercise can be started using `#exercise("title", nb_points)`, for example:
 
-    #exercise_header("Relations and their properties", 2)
+    #exercise("Relations and their properties", 2)
     
     Consider the relation $R subset NN^2$, defined as follows:
     
     $ (x, y) in R #h(0.5cm) <==> #h(0.5cm) x + y #mtext[is odd]. $
     
-    Is $R$ reflexive? transitiv? symmetrisch? antisymmetrisch?
+    Is $R$ reflexive? transitive? symmetric? antisymmetric?
 
-On can also defined (sub-)items for the exercise using `#exercise_items(items, override_points:true)`,
+On can also defined (sub-)items for the exercise using `#exercise-items(override_points:true, numbering:"a)", items)`,
 where `items` is an array of `(nb_points, statement)`. By default, the number of points the exercise
 is worth is recomputed as the sum of points for all items. This behaviour can be turned off by
 setting `override_points: false`.
 
-    #exercise_header("Properties of functions", 3)
+    #exercise("Properties of functions", 3)
     
     Let $f : (0, +infinity) → (0, +infinity)$ with $f (x) = e^(-x)$.
     
-    #exercise_items((
+    #exercise-items((
       (1, [Is $f$ injective?]),
       (1, [Is $f$ surjective?]),
       (1, [Is $f$ bijective?]),
     ))
 
+    #exercise("Logical operators", 3.14)
+
+    Consider the following truthtable:
+
+    #align(center, table(
+      stroke: frame(0.5pt),
+      columns: (auto, auto, auto),
+      align: center,
+      [$A$], [$B$], [$A or B$],
+      [1], [1], [1],
+      [1], [0], [1],
+      [0], [1], [1],
+      [0], [0], [1]
+    ))
+
+    #exercise-items(override-points: false, numbering: "i)", (
+      (1, [Is the truthtable correct?]),
+      (1, [If not, fix it.]),
+    ))
+
 All together, this should output something like:
 
 ![screenshot](screenshot-example.png)
 
 ### Utilities
 
+These are used in the example above.
+
 - `mtext(str)` to typeset text within math mode using the default text font.
 - `frame(stroke_width)` provides `stroke` for use in a `table`, horizontal lines only,
 top and bottom lines are bold.