The //HI command is used to define a hanging indent and the //HC command clears it. An example is:
/ML12//HI-12/This paragraph sets the left margin to 12 using //ML12//, but also uses an //HI-12// command to create a hanging indent to the left. The resultant effect can be seen!
/HCWe now clear the hanging indent with the //HC command. But don't forget to issue a suitable //ML command to return the margin to the left edge.
/ML-12/Like this! (We used //ML-12// on this paragraph).