# Optimization and Programming

This section contains information about features related to code optimization and program performance improvement.

Parent topic: Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

- OpenMP* Support
- Coarrays
- Automatic Parallelization
- Vectorization
- Guided Auto Parallelism
- Profile-Guided Optimization (PGO)
- High-Level Optimization
- Interprocedural Optimization
- Fortran Language Extensions
- fpp Preprocessing
- Methods to Optimize Code Size
- National Language Support (NLS) Routines
- Tools