I started recently to use electrum as a more secure wallet from my web wallet (I use blockchain.info). I use the portable version even though there is a warning in the sub-forum but I believe there is no difference with installed one. I have a couple of questions where I didn't find an answer neither in documentations page nor searching the forum or the net.
1. Tools--> Preferences --> Transactions (Use Multiple Change Addresses check box) what means? I already have checked the above that is Use Change Addresses and looking in tab Addresses I can see Receiving and clicking left arrow besides Change there are six addresses. So what is the difference between them?
2. Tools--> Preferences --> Transactions --> Coin Selection: (Privacy and Priority). What is the difference using first or second one.
If someone has the same confusion with me and has found the solution maybe wants to drop a line or post a link.
You can just hover your mouse pointer over the change addresses option or click the coin selection and it'll give you very good explanations on what those options are.