SCM opt_help_scm
= scm_object_property (sym, ly_symbol2scm ("program-option-documentation"));
string opt_help = ly_scm2string (opt_help_scm);
SCM opt_help_scm
= scm_object_property (sym, ly_symbol2scm ("program-option-documentation"));
string opt_help = ly_scm2string (opt_help_scm);