This says the Help information (for Mathcad 11, it may be slightly different for Mathcad 15):

"

Creating a Hyperlink to a Region

Before you can link to a specific region in a worksheet, you must mark it with a tag. A tag uniquely identifies a region in a worksheet, allowing you to jump directly to that region. A tag can be any collection of words, numbers, or spaces, but no symbols. A tag can not have a period in it, such as Sec1.1 but you can write Sec1,1 or Sec1-1.

To create a region tag:

1. Right-click on any region in your worksheet for which you would like to create a region tag.

2. Select Properties from the pop-up menu.

3. In the Properties dialog box, under the Display tab, type a tag in the text box provided and click "OK."

Now you can link to that region from within the worksheet or from any other worksheet.

To create a hyperlink to a region that has been tagged:

1. Click a region in your worksheet, and choose Hyperlink from the Insert menu.

2. Click "Browse" to locate and select the target worksheet, or type the complete path or Internet address (URL) to a worksheet. You must enter the name of the target worksheet even if you are creating a hyperlink to a region within the same worksheet.

3. At the end of the worksheet path type "#" followed by the region tag. The complete path for your target region will look something like this: C:\filename#region tag

4. Make further desired specifications in the Hyperlink dialog box and click "OK."

Note:

When you link from region to region within or between worksheets, you cannot use the pop-up window option.

"

Other important information:

- Tags are (as it appears) case sensitive, so 'Tag' is different from 'tag'.

- To attach a hyperlink to a text region, instead of the 'insert' menu command you can select 'hyperlink' from the right-mouse-menu.

- If you hover the mouse over a region that has a hyperlink attached, you may see the contents of the 'message that appears...' on the status bar (bottom) of your mathcad window.

See attached file.

Table of Contents is only implemented for 'electronic books', not for mere Mathcad sheets...

Success!
Luc

Try this