Files tend to become larger and larger mostly because they are frequently used as a format for database export or for porting between different database formats. Traditional text editors simply cannot handle opening these huge export files, some having sizes exceeding one gigabyte, because all the file content must be loaded in memory before the user can actually view it.
The file is split in multiple pages (each having about 1MB in size). Each page is individually loaded (and edited) in the Text mode by using the special horizontal slider located at the top of the editing area. The loading operation is very fast and has no upper limit for the size of the loaded file.
The increase of the maximum size of editable files comes with the following restrictions:
the option Format and indent the document on open is disabled for non-XML documents. For XML documents, the format and indent operation it is done optimizing the memory usage, but it ignores the options set in the Format preferences page.
the Outline view is not supported.
the file's content is soft wrapped by default.
the Find/Replace dialog only supports the Find action.
saving changes is possible if Safe save is activated.
the undo operation is not available if you go to other pages and come back to the modified page. the Undo operation loses its previous states if the back and forth between