PDF unit type is used to create tasks, where the students have to study a displayed PDF file. This unit type does not contain questions or solvable tasks.
To create a unit, navigate to For teachers - Learning units page, click Create new, and choose a unit type. To edit an existing unit, navigate to For teachers - Learning units page, find the learning unit in the list, and click the Edit button 
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On the PDF learning unit's edit screen you have the following fields for settings and unit content:
- Unit name - This name will be displayed in the lists of units.
- Labels - Create text labels, which describe the unit's content, purpose, target group, keywords, etc. Labels with multiple words and labels shorter than 3 characters are not supported.
- Advanced settings
- Score value - The points given after successfully completing the task.
- Correct answers required to complete the task (in %) - The percentage of correct answers required to successfully complete the task. If you have one question, the value should be the default 100%, but if you have more questions, more task screens, you can set any percentage of required correct answers.
- Task difficulty (label) - Select difficulty of the unit, which will be added as a label to the learning unit.
- Edit math formulas with Latex - This setting enables the use of a latex editor for creating math formulas.
- Task screen - This type of learning unit contains only one task screen with the fullscreen PDF.
- Upload PDF - Upload a PDF file from your computer.
To check the unit's playable version, click the Save then the Preview button. After you finish editing, click the Save and exit button. This closes the editor screen and gets you back to the unit's list screen.