[TYPO3] "TYPO3 has unlimited history"

[Anoop Atre]

We say TYPO3 has the history of record changes unlimited but since I 
hadn't read TSCONFIG completely I just found out it's not true.

history.maxAgeDays: "The number of days elements are in the history at 
most. Takes precedence over keepEntries. Default is 7 days. Range 0-200. 
Zero turns the magAgeDays of."

AND

history.keepEntries: "Max entries in the sys_history for this table. 
Range 0-200. Zero turns the history of.

AND

History log: By default 20 states of history data is preserved in TYPO3 
and after a week it expires.

So undo's are not unlimited so we are doing false advertising?

*** OR ***

Am I reading docs wrong and I have to set the following for unlimited

TCEMAIN {
     #instead of default you can put also table.tablename (ie. 
table.tt_conent)
     default {
         history.keepEntries = 0
         history.maxAgeDays = 0
     }
}

References:

http://typo3.org/documentation/document-library/references/doc_core_tsconfig/current/view/1/3/#id2798076

Thanks for any of your thoughts! Cheers.