+/* Preamble structure. */
+
+table.foot { width: 100%; } /* Document footer. */
+td.foot-date { width: 50%; } /* Document footer: date. */
+td.foot-os { width: 50%; text-align: right; } /* Document footer: OS/source. */
+table.head { width: 100%; } /* Document header. */
+td.head-ltitle { width: 10%; } /* Document header: left-title. */
+td.head-vol { width: 80%; text-align: center; } /* Document header: volume. */
+td.head-rtitle { width: 10%; text-align: right; } /* Document header: right-title. */
+
+/* Sections. */
+
+h1 { margin-bottom: 0px; font-size: medium; margin-left: -4ex; } /* Section header (Sh, SH). */
+h2 { margin-bottom: 0px; font-size: medium; margin-left: -2ex; } /* Sub-section header (Ss, SS). */
+div.section { margin-bottom: 2ex; margin-left: 4ex; } /* Sections (Sh, SH). */
+div.subsection { } /* Sub-sections (Ss, SS). */
+table.synopsis { } /* SYNOPSIS section table. */
+
+/* Vertical spacing. */
+
+p { } /* Paragraph: Pp, Lp. */
+blockquote { margin-top: 0px; margin-bottom: 0px; }
+table { margin-top: 0px; margin-bottom: 0px; }
+td { vertical-align: top; }
+
+/* General font modes. */
+
+i { } /* Italic: BI, IB, I, (implicit). */
+.emph { font-style: italic; font-weight: normal; } /* Emphasis: Em, Bl -emphasis. */
+b { } /* Bold: SB, BI, IB, BR, RB, B, (implicit). */
+.symb { font-style: normal; font-weight: bold; } /* Symbolic: Sy, Ms, Bf -symbolic. */
+small { } /* Small: SB, SM. */
+
+/* Block modes. */
+
+.display { } /* Top of all Bd, D1, Dl. */
+.list { } /* Top of all Bl. */
+
+/* Context-specific modes. */
+
+i.addr { font-weight: normal; } /* Address (Ad). */
+i.arg { font-weight: normal; } /* Command argument (Ar). */