Global(void) Help(CharPtr key);
Global(void) HelpSearch(CharPtr firstkey);
Global(void) HelpSetVar(void);
Global(void) HelpAddFile(CharPtr helpfile);
Global(void) HelpRemFile(CharPtr helpfile);
Global(Boolean) HelpTerm(void);

Global(void) ReadHelpFile(void);
Global(void) FreeHelpFile(Boolean all);

#define HLP_NOTAVAIL	"kh_NotAvail"
#define HLP_NOTYPES	"kh_NoTypes"		/* types are not selected */
/***#define HLP_INDEX	"kh_Index"***/		/* Top-level index */

#define HLP_ABOUT	"kh_About"
#define HLP_MAINWIN	"kh_MainWin"		/* Main window */
#define HLP_MAINOPT	"kh_MainOptWin"		/* Main window options */
#define HLP_ARCHIVE	"kh_Archive"		/* Select Archive help */
#define HLP_FUNCTION	"kh_SystemWin"		/* Select Functions */
#define HLP_DIAGRAM	"kh_DiagramWin"		/* Select Diagram */
#define HLP_CURVE	"kh_CurveWin"		/* Select Curve */
#define HLP_SUSPEND	"kh_PauseMode"		/* Suspend mode */
#define HLP_USERFUNC	"kh_UserFuncWin"	/* Define user functions */
#define HLP_FUNCPARAM	"kh_FuncParWin"		/* Edit functional parameter */
#define HLP_RHS		"kh_RHSWin"		/* Edit RHS specification */
#define HLP_INITPOINT	"kh_InitPointWin"	/* Select initial point */
#define HLP_FILTER	"kh_ArchFilterWin"	/* Archives filter */
#define HLP_PAUSEOPT	"kh_PauseModeWin"	/* Pause mode */
#define HLP_POINTOPT	"kh_SpecPointWin"	/* Attributes of special points */
#define HLP_HIDDEN	"kh_HiddenListWin"	/* Hidden windows */
#define HLP_EDITOR	"kh_EditorMenu"		/* Editor menu */
#define HLP_EXPORTSYS	"kh_SysExpWin"		/* Export system window */
#define HLP_IMPORTSYS	"kh_SysImpWin"		/* Import system window */
#define HLP_EXPORTDGM	"kh_DgmExpWin"		/* Export diagram window */
#define HLP_IMPORTDGM	"kh_DgmImpWin"		/* Import diagram window */
#define HLP_EXPORTCRV	"kh_CrvExpWin"		/* Export curve window */