User Guide# 1. Supervised Decision Trees 1.1. Oblique Trees 1.1.1. Differences compared to decision trees 1.1.2. Mathematical formulation 1.1.3. Classification, regression and multi-output problems 1.1.4. Complexity 1.1.5. Tips on practical use 1.1.6. Limitations compared to decision trees 1.2. Honest Trees 2. Unsupervised Decision Trees 2.1. Unsupervised Criterion 2.1.1. Two-Means 2.1.2. Fast-BIC 2.2. Evaluating Unsupervised Trees 3. Oblique Random Forests 4. Feature importance evaluation