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| Chapter 13 mm Macros |

## .H

    .H n [heading]

Print a numbered `heading` at level `n`, where `n` is from 1 to 7. See any of the following for more information:

### Number registers

Ej

  Page eject.

Hb

  Break after heading.

Hc

  Centered heading.

Hi

  Type of first paragraph after heading.

Hs

  Space after heading.

Hu

  Unnumbered headings.

### Strings

HF

  Font control.

HP

  Point size.

### Macros

.HM

  Heading mark.

.HU

  Unnumbered headings.

.HX, .HY, .HZ

  User-supplied macros invoked during output of header.

Reference: .FS |  | Reference: .HC