I.R.I.S. Readiris 14 for Windows User Guide - Manual (Page 26)

Section 2: Getting Started
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Note that the appearance of the components and panels described
above can be customized to your liking.
C
USTOMIZING THE INTERFACE
The interface can be customized in several ways:
Note that the Pages panel cannot me hidden or moved around.
Autohiding the panels
The panels can be auto-hidden to save space in the Readiris
interface.

Click the Auto-hide icon on a panel to hide it.

When a panel is hidden, its name appears vertically in
the left or right sidebar.

Point the cursor to the name to make the panel appear.

To disable the Autohide function, click the Autohide
icon again.
Hiding panels
In case you want to hide the panels completely: