TrueType字体嵌入（中英对照）

The solution to document portability便携文档解决方案

If you're a regular user of computers, you're probably familiar with the following frustration: occasionally when you open a document created on a different computer, you find that the formatting is all messed up and that the fonts have changed.
如果你经常使用电脑，你或许熟悉如下困境：有时当你打开一个由其它电脑建立的文档，你发现格式已经混乱，字体改变了。

The most common cause of this problem is that the document was created using fonts that are not present on your computer. There are several solutions to this problem.

这个问题的普遍共同原因是这个文档中使用的字体在你的电脑中不存在。这有些关于这个问题的解决方案。

When creating documents you could stick with the Arial and Times New Roman fonts that are supplied with every copy of Windows. However, this would make for very dull documents.

建立文档时，你使用每个电脑都支持的Arial and Times New Roman字体。然而，这将使文档呆板。

Copying the fonts you use onto a disk or network server and giving them to all the people who might want to read or print your document, isn't a good idea.

复制你使用的这些字体到磁盘或网络服务器，并分发它们给可能想去读或打印你的文档的每个人，这不是个好主意。

Aside from the logistical problems this would cause, this action would almost certainly be illegal.Fonts are software products in their own right, and are protected by international copyright law as well as individual license agreements. Even redistributing so-called 'freeware' or 'public domain' fonts is problematic.

这些行为可能非法的。 字体是有版权的软件产品，由国际版权法和单独授权协议保护。即使重新分发所谓的“自由软件”或“公有领域”字体也是有问题的。

Unless you created the fonts yourself from scratch you can never be sure that the public domain fonts you redistribute are not derived from someone else's fonts.

除非你创造自己的字体，从白手起家，你永远不能肯定地说，你再分配公共领域的字体，不是来自别人的字体。

Many applications include font substitution features that choose the closest possible match if the specified font is not installed.

许多应用程序包括字体替换功能，如果指定的字体没有安装会选择尽可能密切配合的字体。

Several Microsoft products support font substitution and also include TrueType font embedding technology.

一些微软产品提供替代字体和包括TrueType字体嵌入技术。 As the name suggests this technology lets you 'embed' the fonts that you've used within the document file itself.

正如其名称所暗示的这种技术，让你'嵌入'字型在你使用的文档中。

Taking advantage of the technology

Several applications support TrueType font embedding. Consult your user manuals or help files for details. The following description and screen capture is taken from Microsoft Word 97.

利用该技术，一些应用程序支持TrueType字体嵌入。参考你的使用手册或详细帮助文档。下面的说明和截图来自微软Word 97

To save a document with the fonts embedded, select 'Save As...' from Word's 'File' menu, then select 'Options...' to access the dialog box shown below.

要保存一个嵌入字体文档，选择word的“文件”菜单中的“另存为”，然后选“选项”会看到下面这个对话框。

图1. Word 97, 文件保存选项

Reducing document file sizes

The latest Microsoft products that include TrueType embedding use MicroType Express, a lossless font compression technology licensed from Agfa, to reduce the size of document files. For more details see Agfa's press release on this subject.

最新微软产品使用MicroType Express字体嵌入技术－－Agfa公司授权的无损字体压缩技术来减小文档大小。

At the document author's discretion other techniques may be employed to reduce file sizes. By default, all available font styles; regular, bold, italic and bold-italic of any typeface used are embedded within the Word file. This ensures that the document can be edited if loaded onto another computer. Unfortunately, this makes the file far larger than is necessary if it only needs to be viewed or printed and not edited.

文件作者酌情选择其他技术减小文档大小。默认情况下，所有用于嵌入的字体的可用的字体风格;正规，粗体，斜体和粗斜体，都会内嵌于Word文件。这将确保该文件可以进行编辑，如果载入到另一台电脑。不幸的是，这使得文档大小远超过实际需要的，如果只需要查看或打印而不是编辑。

The new option 'Embed characters in use only' forces Word to embed only the font styles used, so if the 'bold' style isn't used in a document it will not be embedded. Furthermore, if you use fewer than 32 characters from any given font, for example a headline font, only the used characters are embedded. This option is most useful for documents that will not require editing by the recipient. Attempts to edit the document will be restricted because characters taken from a default font will be used to replace those missing from the embedded font.

新的选项'只嵌入使用字符'迫使word只嵌入使用的字体类型，所以，如果'粗体'类型没用在一个文件中，它不会被嵌入。此外，如果您从任何特定的字体使用少于32个字符，，例如标题字体，只有使用的字是嵌入的。这个选项对接受者将不需要编辑的文件最有用。试图编辑该文件将受到限制，因为汉字是从一个默认字体将用于替换那些失踪的嵌入式字体。

Typical file size reductions

As a test, we created a document containing a short two word headline (10 unique characters) and one hundred words of continuous text (using most upper and lower case characters). The headline was set in Antique Olive Bold, and the body text set in Century Schoolbook. The following file sizes were reported:

典型的文件大小减少 作为一个测试，我们创造了一个文件，其中含有短的两个词的标题（ 10个独特字符）和100字的连续文本（使用很多大小写字母） 。标题是Antique Olive粗体，但主体文本设成Century Schoolbook字体。下列文件大小分别报告：

• 19.5KB - the file saved from Word 97 without TrueType embedding enabled. 未使用字体嵌入的Word 97文档
• 464KB - the file saved from Word 95 with TrueType embedding enabled. This file contains embedded versions of the regular, bold and italic styles of Century Schoolbook and the regular, bold, italic and bold-italic styles of Antique Olive.Word 95保存的嵌入的TrueType档案该文件包含嵌入Century Schoolbook字体和Antique Olive字体的正常，粗体，斜体风格。
• 181KB - the file saved from Word 97 with TrueType embedding enabled. The file contains the same fonts as the previous file, however, Word 97 uses Agfa's MicroType Express compression system to reduce the size of the file.，Word 97保存的嵌入的TrueType档案。这个文档包含和前一个文档同样的字体。然而，Word 97使用了 Agfa公司 MicroType Express字体压缩技术来减小文档大小。 Express
• 48.5KB - the file saved from Word 97 with TrueType embedding enabled and the 'embed only used characters' option enabled. The file only contains the 10 used characters from Antique Olive bold and all of Century Schoolbook regular.
  Word 97保存的嵌入的TrueType档案,使用“仅嵌入使用字符”选项，嵌入Antique Olive粗体和Century Schoolbook正常体。

Checking the embedding level of your fonts

On your computer's hard disk your TrueType font files all look the same. However, type designers and foundries are able to decide how their fonts are embedded within your documents. They can even decide not to allow embedding.

检查在您电脑的硬盘上你的TrueType字体文件嵌入级别。然而，字体设计师和创建商就可以决定他们的字体如何，嵌入到你的文件。他们甚至可以决定不容许嵌入。

If you attempt to embed fonts into a document that have been set to 'no embedding' then they will not be included. So to save time it might be worth choosing fonts that allow embedding before starting work on a document.

The easiest way to check the embedding-level of a font is to use Microsoft's free font properties extension for Windows 95 and Windows NT. When this Windows utility is downloaded and installed, you'll be presented with lots of information about any font you 'right click' on.

如果您尝试嵌入已设定为'不嵌入'字体到这个文件 ，然后，他们将不会被包含在内。所以为了节省时间，在嵌入开始之前你也许该选择可嵌入的字体。 最简单的检查一种字体嵌入级别的方法是使用微软Windows 95和Windows NT的免费字体属性扩展 。当这个Windows工具下载并安装之后，任何字体你点'右击' ，您将可以看到很多信息。

Figure 2. Font properties extension, Embedding Information.

As can be seen from the illustration, the extension tells you the embedding level of the font you've accessed and describes each of the four possible levels.

从插图可以看出扩充信息，告诉你嵌入字体的四个可能的级别。

Ask about embedding levels when you buy new fonts

Most foundries and type designers set the embedding level of their fonts to Editable embedding allowed or Print & Preview embedding allowed. However, a few foundries set the embedding level to No embedding allowed. If you feel that embedding technology has a place within your organization, be sure to ask the type vendor about it before you part with any money.

当你购买新字体询问嵌入级别 大多数创建者和字型的设计师设定嵌入级别为Editable embedding allowed（可编辑嵌入）或者Preview embedding allowed（预览嵌入）但是，有少数创建者设定嵌入为No embedding allowed（嵌入不允许）的。如果你感到嵌入技术在你的组织有一点位置，购买前一定要询问清楚该字体供应商