Troff Tutorial g Point Sizes Line Spacing s Fonts and Special Characters s Indents and Line Lengths s Tabs s Local Motions: Drawing lines and characters s Strings s Titles, Pages and Numbering s Number Registers and Arithmetic s Macros with arguments s Conditionals s Environments s Diversions s Character Set s Some Common Fonts s bottom margin s current page s current page number s current point size s default scale factor s default units s double quotes s in-line command s laser printers left margin s line spacing s arithmetic s macro call s macro definition s mathematical symbols s number register s point size s relational operators s relative size changes s scale indicator s special characters s tab stops s temporary indent s text-formatting program g unfilled text s vertical motion s vertical position s vertical space s -mm c -ms c eqn C tbl C -mpm c typesetter PostScript machine units s horizontal motion s unpaddable white space s Introduction to Macros comment s predefined number register s special-font characters s greek s page offset s tab replacement character s backslash s