[GTVL\]EXPORT FileName [DirName] Export the current (or specified) directory tree to an external metacode file of name FileName. The default extension is .meta, and these files have a different format than the old .vec files. The sub-plot can later be reincorporated using command IMPORT. This allows merging several plots together. This command does an implicit COMPRESS before saving the tree, so that invisible subtrees will be deleted.