When you use BreakAll to remove a point in any existing object, something radical happens. The two edges on either side of the point deleted disappear, and a new edge is created directly between the points on either side. This edge is shorter than (or, at best, equal to) the two edges that disappeared combined. So what happens to attachments on a wall when this happens?
BreakAll preserves the attachments, placing them on the wall in replaces the deleted walls with, proportional to where they were on the two walls combined before the deletion. This can result in attachments, which don't change size at all, overlapping where they didn't before the deletion. This is allowed to happen, and it is up to the user to straighten out any logical problems if necessary. The more serious problem occurs when this wall shrinkage causes an attachment to encroach upon one end or the other of the new wall. This cannot be allowed to happen (as explained above), and so, if that is the result, BreakAll will issue an error message to the user and prevent the deletion from occurring. The remedy is to move the offending attachment closer to the point being deleted, so it is not so near the ends of the new wall, and retrying the deletion.
As mentioned above, it is possible to select the last point of an open object and request its removal by BreakWall. It is, however, an illegal act, and BreakAll will warn you that that is the case and refuse to do it.
A related action is to choose the first handle of an open object and request that it be removed. It is a full-fledged point, so BreakAll will honor the request. However, there is nothing on the far side of that point to anchor the first edge of the object, so BreakAll will ask if you really want to do this. If you say so, it will then delete not just the point but its edge as well, and any attachments on it. This is the same action you would get by simply deleting the attachments and the edge with Punch! directly.
BreakAll and the contents of this help file are
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