* Improved debugging of the observers in the status singleton object.
* Changed the behaviour of the [http://www.nmr-relax.com/api/1.3/arg_check-module.html arg_check module] so that the functions can return answers.
* The [http://www.nmr-relax.com/api/1.3/test_suite.gui_tests.bmrb.Bmrb-class.html#test_bmrb_rw Bmrb.test_bmrb_rw GUI test] now uses the base [http://www.nmr-relax.com/api/1.3/test_suite.gui_tests.base_classes.GuiTestCase-class.html#execute_uf execute_uf() method] for the [http://www.nmr-relax.com/manual/pipe.createpipe_create.html pipe.create] call - this is part of the simplification of the user function interfaces.
* A number of the pipe GUI user function front ends now use the [http://www.nmr-relax.com/api/1.3/gui.wizard.Wiz_page-class.html wizard page] element_*() methods to simplify the code base.
* The [http://www.nmr-relax.com/api/1.3/gui.wizard.Wiz_page-class.html#element_string_list wizard page element_string_list() method] can now create the special Combo_list objects.