writer hide text and leave marker

 Build ID: 1:6.0.7-0ubuntu0.18.04.2
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3; 
Locale: en-CA (en_CA.UTF-8); Calc: 

I want is to hide a portion of text and leave in its place some indicator that there is text hidden at that location. There may be a better way of doing this.

Perhaps a marker in the text to indicate that there is a comment attached. A link would be great.

It’s not quite clear to me what you want. Do you want the indicator to be visible? Then you might insert any text, in a different colour, or in a box, to set it apart. If you only want to be able to visit all spots with hidden text, you can insert bookmarks and use the tool to go to a bookmark.