pdf_signature/docs/FRs.md

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# Functional Requirements
## user stories
* name: PDF browser
* role: user
* functionality: view and navigate PDF documents
* benefit: select page to add signature
* name: load signature picture
* role: user
* functionality: load a signature picture file
* benefit: easily add signature to PDF
* name: geometrically adjust signature picture
* role: user
* functionality: adjust the size and position of the signature picture
* benefit: ensure the signature fits well on the PDF page
* name: graphically adjust signature picture
* role: user
* functionality: background removal, contrast adjustment...
* benefit: easily improve the appearance of the signature on the PDF without additional software.
* name: draw signature
* role: user
* functionality: draw a signature using mouse or touch input
* benefit: create a custom signature directly on the PDF if no pre-made signature is available.
* name: save signed PDF
* role: user
* functionality: save/export the signed PDF document
* benefit: easily keep a copy of the signed document for records.