Comments

Comments within the NZPLSQL language can start with either a double dash or a forward-slash asterisk.

A double dash (--) starts a comment that extends to the end of the line. For example:
```
-- This is a comment line.
```
A forward-slash asterisk pair (/*) starts a block comment, which extends to the next occurrence of the ending sequence which is an asterisk forward-slash (*/) pair. For example:
```
/* This is a block comment, 
   which can span multiple lines.
   Any code inside the block such as:
      url varchar := 'http://www.ibm.com'
   is ignored. */
```

Block comments cannot be nested, but double dash comments can be enclosed in a block comment. A double dash comment can “hide” the block comment delimiters /* and */.