How to update a tileset from 2.2 to 2.3

To update a tileset from 2.2 to 2.3 you must add some new graphics and update the file format strings.
==The .tilespec file==
* Set tilespec format to options = "+Freeciv-2.3-tilespec".
* If you want to use the larger building and wonder sprites formerly in the Amplio tileset, include the following files from misc/ :
**buildings-large.spec
**wonders-large.spec
* If you want to use the new larger flagset (twice the size) include the following files from misc/ :
**flags-large.spec
**shields-large.spec
==The .spec files==
* Set spec format to options = "+Freeciv-2.3-spec".
==Various tiles==
* Add sprites for city sizes >99.
**Minimum requirement is the second zero in '100': city.size_00.
**Recommended is also city.size_100 through city.size_900.
==New files in misc/==
* Larger building and wonder icon spec files (sprites are included from buildings/ and wonders/).
* Larger flags and shields spec files (sprites are included from flags/).
Category:Editing tilesets