XTREE enhancement: In multi-level trees, the left and right arrow keys now act like the +/- keys (to expand/contract levels), provided there is no conflict with those keys, i.e. provided none of the XTF_EDITABLE, XTF_LEFT or XTF_RIGHT flags are set. You can also force the new left/right behavior even when such conflicts exist by using the new compound cformat code "@@" (instead of "@").
Although this may be an "enhancement" of only microscopic proportion, it does permit rapid navigation in multi-level trees without have to lift one's figures from the cursor control keys.
