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proc gid_themes::GetImage { filename IconCategory }
IconCategory could be: "small_icons", "medium_icons", "large_icons", "menu", "toolbar"
There is another IconCategory, "generic", that is the category used when the parameter is omitted. Using this category the image is retrieved from root image folder (Example: (GiD Folder)\themes\GiD_classic\images\ ), but the use of this category its not recommended, since images from root folders are not guaranteed on future versions.
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