Steps for check service pack level in sap

Hi,
    There are three ways to check service pack level in sap.

1.In OS level.
2.In SAP GUI
3.In T-code SPAM


We will see in detailed.

In OS level.
1.Go to run, type cmd and press enter.
2.type disp+work in command prompt.

3.In this all the details will Show.

In SAP GUI.
1.Login to the sap
2.go to system menu in the top right.
3.in that click status.

In T-code SPAM

1.Goto T-code SPAM.

2.In this click package level.