On the OCR Tools Toolbar you have tools for OCR reading. You can select the OCR Engine and access it's settings and do OCR for the fields created.
OCR Read
This menu allows you to setup OCR reading and to select the OCR engine desired. It is good practice to change it when the current one is returning too many errors. This menu is the same as the OCR Read Options menu on the on the Scan/Input Tab.
Options presented by the OCR Read menu.
The Do All Text OCR on All Images option will open the OCR All Pages window. You can change the Active OCR Engine by selecting one from the Active OCR Engine menu and tweak it's settings by clicking on the Active OCR Settings options. More on OCR Engines and it's settings here.
By enabling this function ChronoScan will try to read the whole page using the currently active OCR Engine. Recommended for setting up the Job. If you want to use Fast Field Creation you must have this enabled.
This button will rebuild only the OCR done on the OCR Zones, much faster than OCR Rebuild. Use this if you only need the information inside the OCR Zones.