def init_context
@control = page_option(:control)
@factory = page_option(:factory)
@load_error_list = @control.load_errors
@lib_name = nil
@load_error = nil
@load_error_index = nil
@document_error_list = @control.doc_errors
@document_error = nil
@doc_error_index = nil
@doc_argument = nil
@doc_arg_index = nil
@filter_error_list = @control.filter_errors
@filter_error = nil
@filter_error_index = nil
@filter_argument = nil
@filter_arg_index = nil
@alias_error_list = @control.alias_errors
@alias_error = nil
@logging_error_list = @control.logging_errors
@logging_error = nil
@log_error_index = nil
end