Requests appear without the leading control character (normally either ‘.’ or ‘'’).
ab: Debuggingad: Manipulating Filling and Adjustingaf: Assigning Formatsaln: Setting Registersals: Stringsam: Writing Macrosam1: Writing Macrosami: Writing Macrosami1: Writing Macrosas: Stringsas1: Stringsasciify: Diversionsbacktrace: Debuggingbd: Artificial Fontsblm: Blank Line Trapsbox: Diversionsboxa: Diversionsbp: Page Controlbr: Manipulating Filling and Adjustingbreak: whilebrp: Manipulating Filling and Adjustingc2: Character Translationscc: Character Translationsce: Manipulating Filling and Adjustingcf: I/Ocflags: Using Symbolsch: Page Location Trapschar: Using Symbolschop: Stringsclass: Character Classesclose: I/Ocolor: Colorscomposite: Using Symbolscontinue: whilecp: Implementation Differencescs: Artificial Fontscu: Artificial Fontsda: Diversionsde: Writing Macrosde1: Writing Macrosdefcolor: Colorsdei: Writing Macrosdei1: Writing Macrosdevice: Postprocessor Accessdevicem: Postprocessor Accessdi: Diversionsdo: Implementation Differencesds: Stringsds1: Stringsdt: Diversion Trapsec: Character Translationsecr: Character Translationsecs: Character Translationsel: if-elseem: End-of-input Trapseo: Character Translationsev: Environmentsevc: Environmentsex: Debuggingfam: Font Familiesfc: Fieldsfchar: Using Symbolsfcolor: Colorsfi: Manipulating Filling and Adjustingfl: Debuggingfp: Font Positionsfschar: Using Symbolsfspecial: Special Fontsft: Font Positionsft: Changing Fontsftr: Changing Fontsfzoom: Changing Fontsgcolor: Colorshc: Manipulating Hyphenationhcode: Manipulating Hyphenationhla: Manipulating Hyphenationhlm: Manipulating Hyphenationhpf: Manipulating Hyphenationhpfa: Manipulating Hyphenationhpfcode: Manipulating Hyphenationhw: Manipulating Hyphenationhy: Manipulating Hyphenationhym: Manipulating Hyphenationhys: Manipulating Hyphenationie: if-elseif: if-elseig: Commentsin: Line Layoutit: Input Line Trapsitc: Input Line Trapskern: Ligatures and Kerninglc: Leaderslength: Stringslf: Debugginglg: Ligatures and Kerninglinetabs: Tabs and Fieldsll: Line Layoutls: Manipulating Spacinglsm: Leading Spaces Trapslt: Page Layoutmc: Miscellaneousmk: Page Motionsmso: I/Ona: Manipulating Filling and Adjustingne: Page Controlnf: Manipulating Filling and Adjustingnh: Manipulating Hyphenationnm: Miscellaneousnn: Miscellaneousnop: if-elsenr: Auto-incrementnr: Setting Registersnroff: Troff and Nroff Modens: Manipulating Spacingnx: I/Oopen: I/Oopena: I/Oos: Page Controloutput: Diversionspc: Page Layoutpev: Debuggingpi: I/Opl: Page Layoutpm: Debuggingpn: Page Layoutpnr: Debuggingpo: Line Layoutps: Changing Type Sizespsbb: Miscellaneouspso: I/Optr: Debuggingpvs: Changing Type Sizesrchar: Using Symbolsrd: I/Oreturn: Writing Macrosrfschar: Using Symbolsrj: Manipulating Filling and Adjustingrm: Stringsrn: Stringsrnn: Setting Registersrr: Setting Registersrs: Manipulating Spacingrt: Page Motionsschar: Using Symbolsshc: Manipulating Hyphenationshift: Parameterssizes: Changing Type Sizesso: I/Osp: Manipulating Spacingspecial: Special Fontsspreadwarn: Debuggingss: Manipulating Filling and Adjustingsty: Font Familiessubstring: Stringssv: Page Controlsy: I/Ota: Tabs and Fieldstc: Tabs and Fieldsti: Line Layouttkf: Ligatures and Kerningtl: Page Layouttm: Debuggingtm1: Debuggingtmc: Debuggingtr: Character Translationstrf: I/Otrin: Character Translationstrnt: Character Translationstroff: Troff and Nroff Modeuf: Artificial Fontsul: Artificial Fontsunformat: Diversionsvpt: Page Location Trapsvs: Changing Type Sizeswarn: Debuggingwarnscale: Debuggingwh: Page Location Trapswhile: whilewrite: I/Owritec: I/Owritem: I/O