* </li><li>SHOW_QUALITY show alignment quality annotation
* </li><li>SHOW_ANNOTATIONS show alignment annotation rows
* </li><li>SHOW_CONSERVATION show alignment conservation annotation
+ * </li><li>CENTRE_COLUMN_LABELS centre the labels at each column in a displayed annotation row
* </li><li>DEFAULT_COLOUR default colour scheme to apply for a new alignment
* </li><li>DEFAULT_FILE_FORMAT file format used to save
* </li><li>STARTUP_FILE file loaded on startup (may be a fully qualified url)