Uploaded files are an important attack vector for Web applications, so it's important to validate all such uploads before you accept them for storage.
上传的文件是 Web 应用程序最易受攻击的地方之一，因此在接受存储它们之前一定要进行验证。
You can register on the site and upload and download vector files as a member. The site's blog also keeps you in the know of what's happening all around the site.
注册后，你能作为会员来进行上传下载，网站博客可以使你了解网站正在发生的事。
Version Extended includes all necessary advanced tools for creation and edition of vector files DWG and DXF.
版本扩展，包括所有必要的先进工具来进行创作和编辑矢量文件DWG和DXF。
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