The Foundation's Plugin for Word permits the user to save a text document within the Word application in the ISO OpenDocument Format (.odt).
Fig. 1: (Word 2000) File -> Save As wizard now includes the .odt extension as if it were one of Microsoft's own formats (click image to expand).
With the ODF Plugin installed, the user's action to save the file is as natural as if ODF were native to the Word application.
The user may work within Word in the .odt format and open and save .odt files, transparently. The user or administrator may also set .odt as the default file format for Word (more screenshots soon).