write-editor-global-header in Editors

• (write-editor-global-header out) -> boolean
     out : editor-stream-out% object

  Writes data to out, initializing it for writing editors to the stream. The return value is #t if the write succeeds, or #f otherwise.

  One or more editors can be written to the stream by calling the editor's write-to-file method. When all editors are written, call write-editor-global-footer. Calls to write-editor-global-header and write-editor-global-footer must bracket any call to write-to-file, and only one stream at a time can be written using these methods or read using read-editor-global-header and read-editor-global-footer.

  To support streams that span MrEd versions, use write-editor-version before this procedure.

  See also section 8.2.