% ls_short_max
     'min_recover_strategy', {0, 'M', [0, 1]}, ...   % recover_strategy
     'min_recover_max', {3, 'I', [0, 10]}, ...       % recover_max
     ... % from phi2.m
     'phi_R', {-0.5, 'R', [-1, 1]}, ...              % R_default
     ... % linesearchs - ls_armijo.m
     'max_ls_iter', {20, 'I', [0, Inf]}, ...   % max tries before LS fails
     'max_lseq_iter', {20, 'I', [0, Inf]}, ...   % same for LS for equality constrained problems
     'armijo_eps', {1e-2, 'R', [0, 1]}, ...  % when is armijo