Retrieve the information about ratification/accession and signature of the treaty on the website of the depositary (e.g. United Nations Treaties Collection for UN treaties).
Download an up-to-date version of BlankMap-World.svg or another appropriate blank map in SVG format. This ensures all relevant changes to countries have been taken into account
With a text editor, open the SVG file (often using "open with" followed by clicking on a text editor). Start writing just above </style> <path id="ocean", and add the 2-letter country-code of the countries to be added (each one preceded by a dot and separated by a comma), followed by color instructions following the examples provided earlier in the file (Additional style rules). An example is: .nl, .us { fill: #ff0000; } to colour Netherlands and the United States in the colour red. Please refer to the documentation of the map to see how to set the colors of the political entities in CSS. To facilitate the upgrading of the treaty status, do not edit the file with a graphic editor like Inkscape, but only change the text in the top part of the file.
Update the file to Commons adding {{NoInkscape}} and a legend to precise the colors used (typically, one for the ratification/accession and one for the signature, but other colour systems are possible). Example :
{{legend|#008000|Ratified}}
{{legend|#eeee00|Only signed}}
In addition to each country having signed or ratified a treaty, some subnational entities may not be colored by the ISO code of the country they have a relationship with. This section is focusing on the legal status of the treaty for the subnational entities, in combination with the way this is coded in the map. It does not infer an opinion about the status of those entities
Subnational entity
parent entity
included in code of
excluded in code of
status of the ratification and action required
Faroe
fo
Denmark
dk
In absence of any reservation, treaties applying to Denmark also apply here
Greenland
gl
Denmark
dk
In absence of any reservation, treaties applying to Denmark also apply here
Tokelau
tk
New Zealand
nz
New Caledonia
nc
France
fr
In absence of any reservation, treaties applying to France also apply here
Hong Kong
hk
China
cn
cnx
In presence of reservation or territorial exclusion, should be discolored.
Macau
mo
China
cn
cnx
In presence of reservation or territorial exclusion, should be discolored.
Puerto Rico
pr
United States
us
Aruba
aw
Kingdom of the Netherlands
nl, nlx
Include if treaty was applied/extended to the Netherlands Antilles prior to 1986, or extendend to Aruba (after 1986), or if it applies to the Kingdom of the Netherlands as a whole
Bonaire, Sint Eustatius and Saba
bq
Kingdom of the Netherlands
nl, an
nlx
Include if treaty was applied/extended to the Netherlands Antilles prior to 10-10-2010, or extended to Bonaire, Sint Eustatius and Saba (after 2010), or if it applies to the Kingdom of the Netherlands as a whole
Curacao
cw
Kingdom of the Netherlands
an
nl, nlx
Include if treaty was applied/extended to the Netherlands Antilles prior to 10-10-2010, or extended to Curacao (after 2010), or if it applies to the Kingdom of the Netherlands as a whole
Sint Maarten
sx
Kingdom of the Netherlands
an
nl, nlx
Include if treaty was applied/extended to the Netherlands Antilles prior to 10-10-2010, or extended to Sint Maarten (after 2010), or if it applies to the Kingdom of the Netherlands as a whole
Guernsey
gg
United Kingdom
gb
Include in presence of explicit territorial application notification from the UK.
Isle of Man
im
United Kingdom
gb
Include in presence of explicit territorial application notification from the UK.
Jersey
je
United Kingdom
gb
Include in presence of explicit territorial application notification from the UK.
Gibraltar
gi
United Kingdom
gb
Include in presence of explicit territorial application notification from the UK.