XTREE editable mode navigation refinement: the left and right arrows keys now work for navigating between editable cells, provided the corresponding InfDef= codes are used: 2 for left arrow, L for right arrow from right edge of field, |L for right arrow from any part of field.
Note that although this behavior may be familiar to INFLD users of those TYPE codes, it is somewhat non-standard for Windows. More standard would be for the left/right arrows to work only within the editable field, and for Tab and Shift+Tab or Ctrl+Arrows to be used for inter-cell navigation.
