## 3.2 Changes in Oz, Mozart libraries and UI

### 3.2.1 oztool

`oztool version` now prints the version number of the installed Mozart (e.g., 1.3.1).

### 3.2.2 loop support

Previously, the iterator `X in` E1`..`E2`;`E3 only permitted to count from E1 up to E2 by increment of E3. Now, whether we intend to count up or down to E2 is determined by the sign of E3.

### 3.2.3 POSIX support

Added `OS.rmDir` to remove a directory. Note that the directory must be empty before it is removed.

Extended `OS.stat` to also return `ino` and `dev` for inode and device information.

### 3.2.4 Standard Library

The standard library was improved and extended, and documentation was added for all modules. The library currently has sections for abstract datatypes, networking support, operating system support, GUI programming and XML support.