In this task, you are given a paragraph in Chinese, and your task is to construct a question in Chinese from the given passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique, and (iv) the answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses the same words or phrases given in the passage. 

Grace是「GRaphing, Advanced Computation and Exploration of data」的缩写。它是在X Window系统和Motif下的所见即所得（所见及所得）的二维绘图软件。Grace可以运行在任何类Unix系统操作系统下。它也成功的运行在OpenVMS、OS/2和Microsoft Windows 9*/NT/2000/XP（Cygwin）。Grace从Paul Turner的ACE/gr演化而来（Grace也被称为ACE/gr的翻版或者改进版）有时也被称为Xmgr. Grace小组在Evgeny Stambulchik的领导下从Xmgr分化发展了grace。他们遵循GNU通用公共许可证原则发行了grace。Paul Terner依旧在维护原来Xmgr的一个封闭版本。Grace能创造印刷质量的图形输出。它支持鼠标操作和脚本代码（该程序语言或者通过其它计算机程序语言）。它能对用户定义的任何复杂方程进行线性和非线性最小二乘法拟合--不论是否有限制。其他的分析工具包括快速傅立叶变换，积分，求导，样条函数，插值和图形平滑处理.
Grace又被称为什么？