Wherever possible, Helix will just put things back if you try to do something that can’t be done. Icons can also “pop” out of black holes in Abacus and Index icons if they are changed.
In the Template, if you try to place a rectangle over another rectangle, it will just slide back to where it came from. If you drag an icon into a rectangle where it should not go, it will zoom back to the icon list.
If you try to drag icons out of their windows, or try to throw away an icon that is being used, it will zoom back.
Each time one of these startling events happens, a message becomes available which is accessed by choosing the “Why?” command under the Apple menu.
If you change the type of a Field icon that is being used in a calculation (and this change results in a “type-mismatch”), the Field icon will pop out of the black holes of all Tiles where it is now “invalid”. If you change the Field icon back to its original data-type, the icons will automatically pop back into the tile holes. Note that if you place calculation tiles so that their holes overlap, and then change Field types back and forth, icons might pop out of one hole, and back into a hole in another tile. This is a good reason why you should not overlap calculation tiles.
