|Build-A-Board®: for Windows; The Next Generation of Onscreen Keyboards; Version 2.20 Release 3; User's Guide|
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KeyBoard Files (KBF, or KBF Files) are data files that define the on-screen keyboard layout and what is presented to the user. In the current version, key labels, key actions, configuration information, license information, and reference lookup data is also included in the KBF file. See KMF Notes and KBF Architecture for further details.
Pre 2.00 KBF notes
In the Pre 2.00 version of My-T-Soft, KBF files defined the key and panel sizes, and KMF files defined the Key Labels and Key Actions. The KBF itself defined the window size, button sizes, and panel configuration.
The actual rectangles that define the button layout for pre 2.00 KBF files can be modified using a special mode within the Builder (activated when an older KBF file is opened). Only 1 panel at a time can be operated on, and Key Properties are limited to hiding keys, or resizing them - labels, etc. are based on the KMF files.