• When uploading assignments on AjouBb, it is not recommended to use special characters(%&#<>=\+/',":!?$@|[]{})

• The assignment name is connected to grade center, so using special character causes system error 

• When uploading lecture video with large files(mp4 file over 100MB), use Xinics to upload the video    

※ The file size upload limit is 200mb for each file