The downloaded .oxt file is a zip archive. If you are
creating a new dictionary, copy the .aff and
.dic files from this archive in the spell
subfolder of the Oxygen XML Developer plugin preferences folder.
The Oxygen XML Developer plugin preferences folder is >, where
[APPLICATION-DATA-FOLDER] is:
C:\Users\[USER-NAME]\AppData\Roaming on Windows Vista/7/8/10
[USER-HOME-FOLDER]/Library/Preferences on OS X
[USER-HOME-FOLDER] on Linux
If you are updating an existing dictionary, copy the .aff and
.dic files into the folder
[OXYGEN_DIR]/dicts/spell.
Restart the application after copying the dictionary files.
Note: You can specify that Oxygen XML Developer plugin includes dictionaries and term lists
from a custom location by selecting the Include dictionaries and term list
from option and specifying its path in the
Dictionaries preferences page.