.pni文件扩展名，.pni文件如何打开？

.pni

文件类型：Popnoggin Image File

扩展名为.pni的文件是一个Raster 图像文件。

文件说明：

Image file used by Popnoggin, an educational program that displays pop-up questions while other programs are running; contains images that are embedded in the pop-up questions.

Popnoggin uses a pay-to-play model that allows kids to earn game time by answering questions; the program keeps track of gameplay time and the number questions answered..pni                                                                  

打开.pni文件

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Popspring Popnoggin　

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