The format is: <#5064#>ESC<#5064#> <#4457#>primary<#4457#> <#4458#>final<#4458#>
Where <#4459#>primary<#4459#> selects one of the four logical character sets (G0 to G3) and <#4460#>final<#4460#> selects the actual character set to be mapped into the logical set.