I will go to the Family History Library in Salt Lake City and look on Film #20793 for the record. I visit the Family History Library regularly and expect a turnaround time of one week or less, unless there are unexpected problems.
“Found” means I found the entry for the name in the index, and the record. I will scan both of them, so you will get two pages.
“Not found” means the person was not listed in the index. I will scan the page of the index where I would have expected to find the name. So you will get one scanned page, documenting that the name was not there.
The column headings for these record are: Full Name of Deceased; Color; Sex; Age; Name of Father of Deceased; Name of Mother of Deceased; Occupation; Place of Birth; Name of Wife of Deceased; Name of Husband of Deceased; Name of Issue Living; Date of Birth & Date of Death; Cause of Death; Name of Place, town or township and County in which the person died; Name and location of Burial Ground in which interred; Name of person returning certificate; Residence of such person; Date of Certificate; Date of registration; Signature of register or his deputy.
All of this data is not available for each individual, but quite a bit is available.