[projects] solutions go into solutions/

projects/README

@@ -1,10 +1,14 @@
 How to make a new project
 -------------------------
-Copy `project_template/` to your `project_NAME/` and adapt according to your needs.
-Rename `template.tex` to `NAME.tex` and write questions.
-Put data that are needed for the project into the `data/` subfolder.
-Put your solution into the `code/` subfolder.
-Don't forget to add the project files to git (`git add FILENAMES`).
+
+- Copy `project_template/` to your `project_NAME/` and adapt according to your needs.
+- Rename `template.tex` to `NAME.tex` and write questions.
+- Put code needed for the project into the project's root directory.
+- Put data that are needed for the project into the `data/` subfolder.
+- Put your solution into the `solution/` subfolder.
+- Put code that is needed to generate some data for the project, 
+  but which is not part of the project, into the `code/` subfolder.
+- Don't forget to add the project files to git (`git add FILENAMES`).
 
 
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