Perl is required for KML building, as well as extracting E-mail header information.

构建KML以及提取电子邮件标题信息需要使用Perl。

youdao

An E-mail message's structure is composed of the message header and the message body.

电子邮件的结构是由消息头和消息体组成的。

youdao

For example, here's a short mail message. The first five lines make up the message header, and the actual message (a single line, in this case) follows after an empty line.

例如这里的邮件信息。前五行组成了消息标头，隔一个空行后是消息主体。

youdao

Some forge their e-mail header--the data above and below an e-mail that contains information about the recipient and sender.

FORBES: Spam Warfare