It has a friendly, easy to use interface and is very powerful. You can use it to create brochures, business cards, posters, and much more and it allows you to create them in PDF form.
This is a great alternative for schools and students who either don't have money to upgrade Office to include Publisher, or who already use other alternatives like LibreOffice.
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Why do schools still pay so much for software? Free alternatives to paid software and services.