Besides a structured table of contents, a complete index, and a full-text search feature, WinHelp system provides a powerful set of macro commands.

Help Explorer Viewer has a built-in macro engine, which processes the macro commands in the format that is compatible with WinHelp. As a free addition to that, the macro engine lets the macros work not only in WinHelp help files, but also in the documentation compiled into HTML Help 1.x (.CHM) and MS Help 2.0 (.HXS) formats.

To insert a macro call in the HTML document, add a code line in the following format:

<a href="helpexplorer:///<file-name>;<window-name>;<macro-command>">Click Me</a>

• The first part helpexplorer:/// designates a special Help Explorer protocol that grants you full access to the macro engine.
• The <window-name> and <macro-command> parts specify a parent window to be used and a macro command to be invoked.

For example, to call the About macro command, use the following code snippet:

The following table lists WinHelp macro commands supported by Help Explorer Viewer:

Command	Description
ALink	Jumps to the topics that contain the specified A-keyword.
KLink	Jumps to the topics that contain the specified K-keywords.
JumpContents	Jumps to the contents topic of the specified Help file.
JumpContext	Jumps to the topic specified by a context number.
JumpHash	Jumps to the topic specified by a topic hash number.
JumpId	Jumps to the topic specified by a topic ID.
JumpKeyword	Jumps to the topic containing a specified K-keyword.
PopupContext	Displays in a pop-up window the topic specified by a context number.
PopupHash	Displays in a pop-up window the topic specified by a topic hash number.
PopupId	Displays in a pop-up window the topic specified by a topic ID.
UpdateWindow	Jumps to the specified topic in the specified window, and then returns the focus to the window that called the macro.
CloseSecondaries	Closes all Help windows except the current secondary window.
CloseWindow	Closes the main or secondary Help window.
FocusWindow	Changes the focus to a specific Help window.
HelpOnTop	Places all Help windows on top of other windows.
PositionWindow	Sets the size and position of a Help window.
SetPopupColor	Sets the background color of pop-up windows.
Back	Displays the topic that was previously displayed in the current window.
Forward	Displays the topic that was previously displayed in the current window.
Contents	Displays the Contents tab or default topic of the current Help file.
Find	Displays the Find tab of the Help Topics dialog box.
Finder	Displays the Help Topics dialog box in its last state.
Next	Displays the next topic in a browse sequence.
Prev	Displays the previous topic in a browse sequence.
Search	Displays the Index tab of the Help Topics dialog box.
ExecFile	Runs a program or opens a file and runs the program associated with that file.
ShellExecute	Opens, prints or runs a file or program.

To get more information on the arguments of these WinHelp macro commands, refer to the WinHelp documentation.