The Japanese text format extensions most often used are:
PC version
When you select Open... from the Text menu, the File selection dialog (shown in Figure 1 below) will be displayed. If you click the Apps popup menu, you will find that you will be able to navigate up the folder hierarchy from the default JWM folder. If you press the Drive button, the contents of the next disk on your computer (by drive designation) will be displayed. To go into a folder (folders are marked with a folder icon on their left side in the File selection dialog), simply double-click the folder name.