# MPQC Input

MPQC supports two input formats.

The primary input is an object oriented format which gives users access to all of MPQC's options. The second format allows access to a subset of MPQC's capabilities, but is more intuitive and easier to learn. New users are advised to start with the simplified format. MPQC can be used to convert the simplified format to the full object-oriented format with the `-i` option.

Each of these input formats is described in the following two chapters:

- Simple Input
- Object-Oriented Input