Doubt on Alerts

Hi ,

I had a doubt regarding 'ALERTS':

1.How do we test alerts ? Is it through report 'RSALERTTEST' , if so any mandatory parameters should be given while testing alerts ?

2. what are these "alert dumps" how to trace them in transaction ST22, any example for clear understanding purpose?

3. In case of alerts what is use of transaction "SLG1"?

plz answer to above questions & ur help will be more valuable .

Regards,

Smitha.