Ingeniux provides support for the versioning of pages. At System Options > CMS > Versioning, you can set the maximum number of versions the system retains for each page. 

Select the Limit Per Page check box. Click the box and enter the number of page versions you want the system to retain. Alternately, you can click the up or down arrows to set this value. 

Selecting the Unlimited check box ensures that the system retains an unlimited number of versions for each page. However, Ingeniux recommends not using the unlimited option because page versions take up server disk space.