.P

.P [type ]

Start new paragraph. A paragraph type can be specified, overriding default. Various registers can be set to control default formats:

Pt	Paragraph type for document (default is 0).
Pi	Amount of indent (default is 3n).
Ps	Spacing between paragraphs (default is one line of white space).
Np	Set this to 1 to produce numbered paragraphs.

Type

0	Left-justified (the default).
1	Indented.
2	Indented except after displays (.DE ), lists (.LE ), and headings (.H ).