WPS Office-PDF,Word,Sheet,PPT v18.16

1. Enhanced PDF signing: Added new Google Fonts compliant with Open Font License (OFL). Details at: https://scripts.sil.org/OFL.
2. Improved signing and form-filling: Varied date formats, easily modifiable signature styles, and smart form-adjustment for mobile use.
3. Advanced OCR features: PDF component now includes text and image extraction, accessible via OCR section in all tabs or by long-pressing content in PDF.