Using Anchors in text

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I have a page that has a contents list in the left sidebar block and all relevant text in the main block. I have added "anchors" to relevant parts of the text in the main block and wish to link to them from the contents list in the sidebar block.
If I put the contents list in the main block then all "anchors" show up.
When I try to link from the sidebar block, no anchors show up.
Is there a way to do this or should I just change to everything in the main block

Globetrotter101