This document is incomplete
The following header entries have become obsolete since Keyman 5.0:
|bitmaps||bitmap.php||Obsolete (was reference to two images, for Keyman 3.2 keyboards)|
|language||language.php||Obsolete* (was the Windows system language for the keyboard)|
|layout||layout.php||Obsolete (was the Windows system layout for the keyboard)|
*In Keyman 6.0, the LANGUAGE header has been reintroduced, but with a different meaning. See The LANGUAGE Header for more information.
In Keyman 4.0, the "+" character became required, and usage became stricter to follow the standard now: the plus character must separate context from keystroke in a rule.
Other keyboard file history information will be added here as it becomes available.