Bracket erasure convention

The bracket erasure convention is an important convention in lexical phonology. It ensures that the morphological brackets introduced within a certain level are erased before entering the next level.

Example:
Here is an example of the bracket erasure convention. The brackets in pressurize are erased before it enters Level II.

Level I
[press] [-ure] [-ize]
+sfx
[press] [-ure]
+sfx
[[[press] [-ure]] [-ize]]
Level II
[re-] [pressurize] (Bracket erasure)
+pfx
[[re-] [pressurize]]