扩充选定区域 expand the selection
非相邻选定区域 nonadjacent selection
选定区域全部改为大写 upcase-region
选定区域全部改为小写 downcase-region
选定区域电子衍射 selected-area electron diffraction
清除选定区域 Edit-Clear
选定非相邻区域 nonadjacent selection
指定可点选区域 AREA SHAPE"RECT" COORDS",,," HREF"URL"|NOHREF
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