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+In this folder, we provide examples for all the main functions implemented in this package.
+
+The folder "fusedLasso" contains functions for the fused Lasso regularized optimization.
+
+The folder "invCov" contains the functions for sparse inverse covariance estimation.
+
+The folder "L1" contains functions for L1 regularized/constrained optimization.
+
+The folder "L1Lq" contains functions for L1Lq regularized/constrained optimization.
+
+The folder "order" contains the functions for optimization with an ordered tree structure--nonnegative max-heap.
+
+The folder "overlapping" contains the functions for the general overlapping group Lasso.
+
+The folder "sgLasso" contains the functions for the sparse group Lasso penalized optimization problem.
+
+The folder "traceNorm" contains the functions for the trace norm minimization.
+
+The folder "tree" contains the functions for tree-structured sparse learning.