Question: list all the reserved words in thrift doc

When I compile my thrift file with thrift 0.13, it reminds me that I can't use reserved word 'in', but I can't find the word list in thrift doc https://thrift.apache.org/docs/idl.html or any other pages in thrift website which makes the rules not so "standard".

So  I wonder, out of what consideration, thrift didn't list the reserved words in doc and if you guys can write them in doc