I don't know if this topic has already been discussed here, but I realized that webtrees is using the prefix 'X' for all types of tokens. For example originally individuals have been named 'I<nn>' and media 'M<nn>'. When I export from webtrees I see that individuals are named like 'X<nn>' and Media also 'X<nn>'. When I ran by export file through a gedcom test programm it stated that it was erronous to use X for Individuals and X for Media.
My question is.
1. Is this a configurable option? (I haven't found any option to change it though, but it might be buried somewhere)
2. If not, what's the reason for deviating from the standard?