Calibre 2.43 发布，此版本更新内容如下：
新特性
Edit Book: Add a 'Smart Comment' tool to easily comment/uncomment text
Press Ctrl+` to trigger the tool, or add the tool to your toolbar via Preferences->Toolbar->Tools for all editors. It will either insert comments around the selected text or uncomment an existing comment if the cursor is inside one.
Tag mapper: Add new rule types to upper-case, lower-case or capitalize tags
Markdown input: Allow the 'extra' convenience extension as a shortcut for enabling multiple other extensions. Also add the Attribute List and Admonition extensions. Finally, update the markdown library used by calibre
Closes tickets: 1512461
Bug 修复
Amazon metadata download: Fix for website change at amazon.com that prevented ratings from being downloaded.
Closes tickets: 1513318
Tag mapper: Prevent cycles in the replacement rules from causing the tag mapper to hang
Closes tickets: 1513330
Do not fail on windows systems where the system function to get the users home folder fails
E-book viewer: Set the foreground color as well as the background color for the reference mode popup. Makes it legible even when the user specifies a different color theme for the viewer.
新增新闻源
La Politica Online by Darko Miletic
下载：http://calibre-ebook.com/download
Calibre是电子书管理软件，支持Amazon、Apple、Bookeen、Ectaco、Endless Ideas、Google/HTC、Hanlin Song设备及格式，功能十分强大。
来自:开源中国社区
