Herzog
Adventurer
In the section Action Types, under Move Action:
and again, in the section 'Take 5-Foot Step', PH p. 144
PH p.138 said:If you move no actual distance in a round (commonly because
you have swapped your move for one or more equivalent actions,
such as standing up), you can take one 5-foot step either before,
during, or after the action
and again, in the section 'Take 5-Foot Step', PH p. 144