Is there a place where you documented the way to add words?

I'm talking about here the special case "dataCenter", sometimes there is a need to use ^, sometimes ~, here it was about using an uppercase C in data center

What would be the way to write a brand that has a dedicated syntax? Like :
Elasticsearch brand that is not elasticseach or ElasticSearch

Originally posted by @ccoVeille in #3846 (comment)