Ways to execute Stored Procedure

In case you were looking for: "possible ways to execute a stored procedure" as I did the first time, the text mentions the EXEC/EXECUTE keyword and the lack of it "if the procedure is the first statement in the Transact-SQL batch"That's important if you intend to write a Regular Expression for example (also my case).The text did not mention cross database calls nor linked server.I wrote about the different ways to execute a proc and a Regex to match that:http://blog.brunogarcia.com/2013/02/regex