docs: def _help():
  	'''Print all available tasks and descriptions.'''
  	for task in sorted(TASKS, key=lambda x: (x.ns or '000') + x.name):
  		tags = ''
  		if task is DEFAULT:
  			tags += '*'
  		if task is SETUP:
  			tags += '+'
  		if task is TEARDOWN:
  			tags += '-'
  
  		print LOCALE['help_command'].format(task, tags, task.help)
  
  		if task.aliases:
  			print LOCALE['help_aliases'].format(task.aliasstr())
  		if task.reqs:
  			print LOCALE['help_reqs'].format(task.reqstr())
  		if task.gens:
  			print LOCALE['help_gens'].format(task.gens)
  		if task.args or task.defaults:
  			print LOCALE['help_args'].format(task.ns + task.name, task.kwargstr(), task.argstr())