Regular expressions, perl, sas

[user112a2]

I am looking at someone elses code and have a question. Below is the code. Where it says: ^DR DUE does that mean the string starts with DR DUE? I am new to perl regular expressions. Also, where ATM\/(DEP|WTD) does this mean match ATM/(DEP|WTD) in the string? However, I thought that ( and ) were metacharacters too. Thanks for your help!

Removed

[HB]

I think that matches a string with COAL anywhere in it or a string that starts with either DR DUE TO ATM/DEP ERROR or DR DUE TO ATM/WTD ERROR.