How to update a tileset from 2.0 to 2.1

To update a tileset from 2.0 to 2.1 you must add many simple new graphics and change the format of a few tags.
==General==
* is_pixel_border has to be changed to pixel_border
==The .tilespec file==
* Set tilespec format to options = "+tilespec4"
* Add the following tags:
**priority
**is_hex
**unit_flag_offset_x, unit_flag_offset_y, city_flag_offset_x, city_flag_offset_y (replaces: flag_offset_x and flag_offset_y)
**unit_offset_x, unit_offset_y
**citybar_offset_y
**city_names_font_size, city_productions_font_size (replaces: city_names_font and city_productions_font)
* Include the following files from misc/ (or create your own):
**colors.spec
**overlays.spec
**citybar.spec
**shields.spec
**cursors.spec
**icons.spec
* Include the following files, using either ones from an existing tileset with the same dimensions, or your own creations.
**select.spec
**grid.spec
**fog.spec
* Include: *include "misc/colors.tilespec"
==City sprites==
* The format of the city sprite tag is now: city.european_city_X where X is the city size.
* The format of the walled city sprite tag is now: city.european_wall_X where X is the city size.
* The format of the occupied city sprite tag is now: city.classical_occupied_X where X is the city size.
==Terrain sprites==
* Add a mask.tile tag that points to a tile mask (i.e. black tile).
* The tx.fog tag should point to a transparent tile mask (otherwise the minimap's fog-of-war won't work).
==New files==
* Grid sprites (see amplio/grid.png).
* Fog-of-war sprites -- if unavailable, the tileset will revert to a less smooth fog (see amplio/fog.png). Can be generated with script in RT.
* Select sprites (see amplio/select.png). Can be generated with script in RT.
==New files in misc/==
* Color sprites (see misc/colors.png).
* Overlay sprites (see misc/overlays.png).
* Citybar sprites (see misc/citybar.png).
* Cursor sprites (see misc/cursors.png).
Category:Editing tilesets