provide...endprovide

hi experts,

I'm starting to learning hr programming. Upon reading the help on sap and the samples, how will I apply the provide...endprovide that gets only the intervals?

It would be appreciated if you could me an hr example where I could use this syntax:

PROVIDE { FIELDS {*|{compi}}

FROM itabj INTO waj VALID flagj

BOUNDS intlim1j AND intlim2j

[WHERE log_expj] }

BETWEEN extlim1 AND extlim2

[INCLUDING GAPS].

Thank you!