Pages: field option. what is their utility?

[ipbfuck]

Hi!

In pages db exist this setting (original lang is "field option):

 

but i cannot understood its utility (i've different setting in every database).

 

someone, please, can try to explain?

 

thanks in advance,

S.N.

 

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Edit, ok, i think i've understood (is for db settings page), but if i change record for page number it still remain to 25 :/

[opentype]

These settings control the listing of database records in listing views. 

[ipbfuck]

Oh... ok, thank'u very much (but seems to change also order list view in db settings)