Transfer macros to new computer

I had already tried the cut and paste procedure with no success. The macros would not execute. Since your answer confirmed that this was the correct procedure I started reading the instruction manual and realize that I had not set the security level to "low" as per the instructions.

Quoting from the manual:

"Click 'Security' then 'Set security Level'. Choose 'Low'.

This is an acceptable option while you become familiar with the WSR Toolkit and developyour macros. You can always come back to here the security level to 'high' as wellas digitally sign your macros once you gain more familiarity with the macro system. You may decide it is desirable to leave the security level set to low."

After following this instruction, the macros worked OK. I'm entirely ignorant as to what this is all about.  If you have time, could you briefly explain the relationship between the security setting and the functionality of the macros? What does my familiarity or unfamiliarity with the system have to do with it? The security level has to be low in the beginning, how come I can set it to high later on. What does it mean to "digitally sign" a macro?

If you don't have time to answer here, could you refer me to a good source of information on the subject?