### 4.2 Editing symbols ¶

When you edit a symbol, it is worth to follow the following rules:

- Connectable ends of its pins have to be snapped to points, coordinates of which are multiples of 100. Otherwise, Lepton tools won’t be able to correctly connect them to any connectable object.
- You have to adjust the ‘`symversion`’ attribute in order the tools would be aware that the symbol in the library is newer than its instances in your schematic and could warn you if something may break. See Editing symbol version attribute on what provisions should be made when you are editing a symbol.