Alternatively, a feature to translate the PDF content into different languages, but if the book is already in Urdu, maybe that's not the case. Hmm.
Wait, but the user hasn't specified which feature exactly. Maybe the feature they had in mind is one of these. Since they mentioned the book, perhaps a download feature is needed. Let me check the possible features again. noorclinicurdubook4pdf
But the user says "develop feature", so maybe they have a specific feature in mind related to the book. For example, a feature that allows users to search within the PDF, or a feature to read the PDF online, or to bookmark specific sections. But those would require JavaScript/pdf.js integration. Alternatively, a feature to translate the PDF content