A new property was added, linline (boolean) and a new method, copytoinline.
By default linline = .F.
When linline = .T., instead of copytoxlsx, the new method, copytoinline is called. This way strings are generated as inline strings, not as a separate xml table.
A few errors were corrected to the old method, copytoxlsx, caused by memo fields with some special html characters (like ampersand or apostrophe).
I've found the inline strings useful when a table has dozens of type character fields.
This new version can be downloaded from here