Omni Systems, Inc. Mif2Go User's Guide, Version 55

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> 8 Generating WinHelp > 8.9 Creating jumps and pop-ups for WinHelp > 8.9.8 Specifying jumps to external files

### 8.9.8 Specifying jumps to external files

Mif2Go produces links to external sources from hypertext markers in your document that contain the following types of hypertext “message” commands:

message URL

message openfile

When a message openfile link specifies an absolute path (which must start with a drive letter), Mif2Go removes any “file:///” URL prefix to the path, which is not needed in RTF. For example:

message openfile file:///g:/omnisys/ug/out/ugmif2go.pdf

becomes:

!EF('g:/omnisys/ug/out/ugmif2go.pdf')

Hypertext “message” commands are implemented in WinHelp with the !EF macro; see §8.10.1 Using a hypertext marker to invoke a macro.

How to insert markers

To insert message URL and message openfile markers, see §34.1.2 Using markers to add links and instructions.