read-editor-global-header

• (read-editor-global-header in) -> boolean
      in : editor-stream-in% object

  Reads data from in to initialize for reading editors from the stream. The return value is #t if the read succeeds, or #f otherwise. One or more editors can be read from the stream by calling the editor's read-from-file method. (The number of editors to be read must be known by the application beforehand.) When all editors are read, call read-editor-global-footer. Calls to read-editor-global-header and read-editor-global-footer must bracket any call to read-from-file, and only one stream at a time can be read using these methods or written using write-editor-global-header and write-editor-global-footer.