keysym — The symbolic name of a key on a keyboard
keysym ::=
altanchorannotationbibliorefindexterm (db.indexterm.endofrange)indexterm (db.indexterm.singular)indexterm (db.indexterm.startofrange)inlinemediaobjectlinkolinkphrase (db._phrase)remarkreplaceablesubscriptsuperscriptxrefThe KeySym identifies the symbolic name of a key on a 
computer keyboard. This is distinct from any scan code
that it may generate (KeyCode), or any symbolic name
(KeySym) that might exist for the key.
These elements contain keysym: bridgehead, citation, citetitle, classsynopsisinfo, emphasis (db.emphasis), entry, firstterm, funcsynopsisinfo, glosssee, glossseealso, glossterm, html:button, html:label, html:legend, keycombo, link, literallayout, member, olink, orgdiv, para, phrase (db.phrase), primary, primaryie, programlisting, quote, refdescriptor, refentrytitle, refname, refpurpose, screen, secondary, secondaryie, see, seealso, seealsoie, seeie, seg, segtitle, shortcut, simpara, subtitle, synopsis, td, term, termdef, tertiary, tertiaryie, th, title, titleabbrev, tocentry.
The following elements occur in keysym: text, alt, anchor, annotation, biblioref, indexterm (db.indexterm.endofrange), indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange), inlinemediaobject, link, olink, phrase (db._phrase), remark, replaceable, subscript, superscript, xref.
accel, guibutton, guiicon, guilabel, guimenu, guimenuitem, guisubmenu, keycap, keycode, keycombo, menuchoice, mousebutton, shortcut<article xmlns='http://docbook.org/ns/docbook'> <title>Example keysym</title> <para>The <keycap>F1</keycap> key on an IBM PC keyboard generates the scan code <keycode>0x3B</keycode> when pressed. This value is defined as <keysym>KEY_F1</keysym> in <filename class="headerfile">keyboard.h</filename>. </para> </article>
The F1 key on an IBM PC keyboard generates the
scan code 0x3B when pressed.  This value
is defined as KEY_F1 in 
keyboard.h.