grr文件用什么打开，grr文件怎么看
grr文件怎么看，grr文件怎么打开？
.grr
文件类型：Gradekeeper Class Roster File
扩展名为.grr的文件是一个数据文件。文件说明：
Roster or list of students in a class created with Gradekeeper, a classroom attendance and grade tracking program; referenced by Gradekeeper when taking attendance and saving scores.The Gradekeeper gradebook is saved as a .GRK file..grr
打开.grr文件
Mac OS
Gradekeeper for Mac OS X
Windows
Gradekeeper for Windows
Linux
其它内容
来源：.grr文件