ability to create tree-like outlines
...d protection of generated PDF documents;加密和密码保护的PDF文件; Ability to create tree-like outlines;能够创建树形概述; Ability to use hDC, which can be used to draw directly on a generated PDF document using WinAPI GDI functions.
基于4个网页-相关网页
ability to create tree-like outlines
能够创建树形轮廓
以上为机器翻译结果，长、整句建议使用 人工翻译 。