doc: update README and manual

1 files changed, 84 insertions, 52 deletions

diff --git a/README.md b/README.md
index 4b04fa7a..438539bd 100644
--- a/README.md
+++ b/README.md
@@ -11,25 +11,29 @@
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fsaturneric%2FGpgFrontend.svg?type=small)](https://app.fossa.com/projects/git%2Bgithub.com%2Fsaturneric%2FGpgFrontend?ref=badge_small)
 [![Build & Package](https://github.com/saturneric/GpgFrontend/actions/workflows/release.yml/badge.svg?branch=main)](https://github.com/saturneric/GpgFrontend/actions/workflows/release.yml)
 
-GpgFrontend is a Free, Open Source, Powerful, Easy-to-Use, Compact, Cross-Platform [OpenPGP](https://www.openpgp.org/)
-Crypt Tool. Also, it's one of the excellent GUI Frontends for Modern [GnuPG](https://www.gnupg.org/) (gpg).
+GpgFrontend is a free, open-source, robust yet user-friendly, compact and
+cross-platform tool for [OpenPGP](https://www.openpgp.org/) encryption. It
+stands out as an exceptional GUI frontend for the modern
+[GnuPG](https://www.gnupg.org/) (gpg).
 
-By using GpgFrontend,
+When using GpgFrontend, you can:
 
-- You can quickly make encrypted files or texts.
-- You can digitally sign your texts or files.
-- You can easily manage all your GPG keys on your machine.
-- You can easily and safely transfer all your GPG keys between your machines.
-- Furthermore, you can build and run it on Windows, macOS, Linux, FreeBSD, etc.
+- Rapidly encrypt files or text.
+- Digitally sign your files or text with ease.
+- Conveniently manage all your GPG keys on your device.
+- Transfer all your GPG keys between devices safely and effortlessly.
+- Furthermore, you can build and run it on various operating systems, including
+  Windows, macOS, Linux, FreeBSD, and more.
 
-GpgFrontend is **PERMANENTLY FREE**, but you can also "DONATE" it through STAR this project. Thanks!
+GpgFrontend is **PERMANENTLY FREE** of charge. However, you can support us by
+"starring" this project. Your contributions are highly appreciated!
 
 [Languages Supported](#languages-support) by GpgFrontend including English, Chinese, French, Russian, German, Spanish, Portuguese, Arabic, etc.
 
 [>> Download <<](https://github.com/saturneric/GpgFrontend/releases/latest)
 | [>> User Manual <<](https://www.gpgfrontend.bktus.com/#/overview)
 | [>> Developer Document <<](https://doxygen.gpgfrontend.bktus.com/)
-| [>> Develop Code Repo <<](https://git.codesdream.com/?p=public/main/GpgFrontend.git;a=summary)
+| [>> Develop Code Repo <<](https://repo.stdv.de/?p=public/main/GpgFrontend.git;a=summary)
 
 <img src="https://github.com/saturneric/Blob/blob/master/screenshots/main-ubuntu.png?raw=true" alt="Ubuntu Main Screenshot"/>
 
@@ -46,8 +50,9 @@ GpgFrontend is **PERMANENTLY FREE**, but you can also "DONATE" it through STAR t
 
 ## Usage
 
-Here are some common usages to help you understand what GpgFrontend does. The interface
-presented here may not be exactly the same as the latest stable release.
+Here are some typical use cases to provide you with a better understanding of
+GpgFrontend's functionalities. Please note that the interface showcased here may
+not exactly mirror the latest stable release.
 
 ### Text Encryption & Decryption
 
@@ -85,8 +90,8 @@ aligns with the recommended configurations.
 ### Operating System
 
 GpgFrontend is compatible with major operating systems including Linux, macOS,
-and Windows. Specifically, it recommends Windows 10 and later, macOS 10.15 High
-Sierra and later, and Ubuntu 18.04 LTS or other equivalent Linux distributions.
+and Windows. Specifically, it recommends Windows 10 and later, macOS 11 and
+later, and Ubuntu 20.04 LTS or other equivalent Linux distributions.
 
 ### Software Dependencies
 
@@ -271,22 +276,55 @@ $ chmod u+x linuxdeployqt-continuous-x86_64.AppImage
 $ ./linuxdeployqt-continuous-x86_64.AppImage ../release/gpgfrontend/usr/share/applications/*.desktop -appimage
 ```
 
-## Languages Support
+## Language Support
 
-The supported languages are listed here. Some languages use machine translation and have not been verified. If you want
-to join translation and verification work, please refer to [HERE](https://gpgfrontend.bktus.com/#/translate-interface).
+Listed below are the languages currently supported by GpgFrontend. Please be
+aware that some of these languages are translated via machine translation and
+may not have been manually verified for accuracy. If you are interested in
+joining our translation and verification work, please refer to [this
+link](https://gpgfrontend.bktus.com/#/translate-interface).
 
 ### Supported Languages
 
-'zh_CN', 'zh_TW', 'zh_HK', 'es_ES', 'fr_FR', 'de_DE', 'pl_PL', 'ru_RU', 'ja_JP', 'it_IT',
-'ko_KR', 'pt_BR', 'ar_SA', 'ar_IQ', 'hi_IN', 'af_ZA', 'sq_AL', 'be_BY', 'bg_BG', 'ca_ES',
-'hr_HR', 'cs_CZ', 'da_DK', 'nl_NL', 'et_EE', 'fa_IR', 'fi_FI', 'fr_CA', 'he_IL', 'id_ID',
-'lt_LT', 'de_AT', 'de_CH', 'el_GR', 'es_MX', 'iw_IL', 'uk_UA', 'en_US', 'en_GB', 'en_AU',
-
-Notice: Most translations are generated by Google's automatic translation
-machine. If you find that a certain translation is wrong, you are welcome to
-[join the translation work](https://www.gpgfrontend.bktus.com/#/translate-interface)
-to provide a more suitable human translation.
+GpgFrontend currently supports a wide array of languages including:
+
+- Chinese (Simplified): 'zh_CN'
+- Chinese (Traditional): 'zh_TW', 'zh_HK'
+- Spanish: 'es_ES', 'es_MX'
+- French: 'fr_FR', 'fr_CA'
+- German: 'de_DE', 'de_AT', 'de_CH'
+- Polish: 'pl_PL'
+- Russian: 'ru_RU'
+- Japanese: 'ja_JP'
+- Italian: 'it_IT'
+- Korean: 'ko_KR'
+- Brazilian Portuguese: 'pt_BR'
+- Arabic: 'ar_SA', 'ar_IQ'
+- Hindi: 'hi_IN'
+- Afrikaans: 'af_ZA'
+- Albanian: 'sq_AL'
+- Belarusian: 'be_BY'
+- Bulgarian: 'bg_BG'
+- Catalan: 'ca_ES'
+- Croatian: 'hr_HR'
+- Czech: 'cs_CZ'
+- Danish: 'da_DK'
+- Dutch: 'nl_NL'
+- Estonian: 'et_EE'
+- Persian: 'fa_IR'
+- Finnish: 'fi_FI'
+- Hebrew: 'he_IL', 'iw_IL'
+- Indonesian: 'id_ID'
+- Lithuanian: 'lt_LT'
+- Greek: 'el_GR'
+- Ukrainian: 'uk_UA'
+- English: 'en_US', 'en_GB', 'en_AU'
+
+**Notice:** Please note that most translations are generated by Google's
+automatic translation service. If you find an error in any of the translations,
+we welcome you to [join our translation
+work](https://www.gpgfrontend.bktus.com/#/translate-interface) to provide a more
+accurate human translation.
 
 ## Contract
 
@@ -311,29 +349,23 @@ GpgFrontend itself is licensed under the [GPLv3](COPYING).
 
 [![FOSSA Status](https://app.fossa.com/api/projects/git%2Bgithub.com%2Fsaturneric%2FGpgFrontend.svg?type=large)](https://app.fossa.com/projects/git%2Bgithub.com%2Fsaturneric%2FGpgFrontend?ref=badge_large)
 
-### Dependencies
-
-There are some libraries and binary included in the zip-file which (may) have different licenses, for more information
-check their homepages. You can also obtain the sources from there.
-
-gnupg: https://gnupg.org
-
-gpgme: https://gnupg.org/software/gpgme/index.html
-
-Qt(opensource): https://www.qt.io
-
-MSYS2: https://www.msys2.org
-
-mingw-w64: http://mingw-w64.org/doku.php
-
-AppImage: https://appimage.org
-
-JSON for Modern C++: https://github.com/nlohmann/json
-
-Qt-AES: https://github.com/saturneric/Qt-AES
-
-macOS Application Bundles: [Link](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFBundles/BundleTypes/BundleTypes.html#//apple_ref/doc/uid/10000123i-CH101-SW1)
-
-The icons of this software use materials from [Alibaba Iconfont](!https://www.iconfont.cn/). The Alibaba vector icon
-library is free to use. The icons in the free library aren't registered as trademarks. There is no copyright issue
-involved and can be used commercially.
+### Dependencies and Acknowledgements
+
+GpgFrontend incorporates various libraries and binaries that come with their
+unique licenses. For additional details or to obtain the source code, please
+visit their respective homepages:
+
+- **GnuPG**: [https://gnupg.org](https://gnupg.org)
+- **GPGME**: [https://gnupg.org/software/gpgme/index.html](https://gnupg.org/software/gpgme/index.html)
+- **Qt (Open Source)**: [https://www.qt.io](https://www.qt.io)
+- **MSYS2**: [https://www.msys2.org](https://www.msys2.org)
+- **Mingw-w64**: [http://mingw-w64.org/doku.php](http://mingw-w64.org/doku.php)
+- **AppImage**: [https://appimage.org](https://appimage.org)
+- **JSON for Modern C++**: [https://github.com/nlohmann/json](https://github.com/nlohmann/json)
+- **Qt-AES**: [https://github.com/saturneric/Qt-AES](https://github.com/saturneric/Qt-AES)
+- **macOS Application Bundles**: [Link](https://developer.apple.com/library/archive/documentation/CoreFoundation/Conceptual/CFBundles/BundleTypes/BundleTypes.html#//apple_ref/doc/uid/10000123i-CH101-SW1)
+
+The icons utilized in this software are sourced from [Alibaba
+Iconfont](https://www.iconfont.cn/). This vector icon library is free of use,
+isn't registered as a trademark, has no copyright issues, and can be
+commercially utilized.