EDT
keybindings and user-defined shortcuts
The EDT keybindings module is designed on the assumption that no other
shortcuts use the same keystrokes that EDT keybindings use. If you have
defined any shortcuts using the same keystrokes, the EDT definitions will
take precedence when the module is loaded.
Redefining existing EDT keybindings is not recommended because the next time the IDE starts any modified definitions will be overridden by their EDT keybindings. However, you may define additional keyboard shortcuts for a particular EDT command, and these will be persistent.
Source
Editor search direction with Find and Replace
The Find or Replace dialog box search direction is always
Forward regardless of the EDT direction state when you initiate the search.
You must choose the Backward Search option in the Find
or Replace dialog box if you wish to search in Reverse direction.
Unexpected
selection range behavior
Within the source editor, you can select text using the mouse and you can
manipulate it using EDT keystrokes. For example, you might select a line
by dragging the mouse and delete it using EDT's CUT command (KP6
keystroke).
With this flexibility comes potential pitfalls within the NetBean UI. For example, when you select text, any additional text insertion causes that selected text to be deleted. In the standard EDT Editor, the additional text insertion would just extend the selected region. However, if you are used to Windows selection behavior, the removal will not be unexpected.