Bone will not stay (frame zero)

[uncle808us]

When I move a bone on frame 0,
then click on either of the main folders the bone snaps right back to the orginal position. Why won't it stay?

[slowtiger]

This depends on the tool you use.
B = select bone.
A = add bone.
T = transform bone. Whatever you do with this one in frame 0 will be permanent.
Z = manipulate bone. This one is for testing in frame 0. Whatever you do with this will be reverted when you select any other tool or leave the frame or select another layer.